ª×èÍÇÒÃÊÒà :   Journal of the American Chemical Society
Vol. 120 No.9,11 March 1998
ª×èÍàÃ×èͧMechanism of 2,5 -Dioxopipperazine Formation
¼Ùéáµè§Sante Capasso, Alessando Vergara, and Lelio Mazzarella
˹éÒ1990

ª×èÍàÃ×èͧSolution- and Solid-Phase Synthesis of N-Protected GlycopeptideEsters of the Benzyl Type as Substrates for Subtilisin-CatalyzedGlycopeptide Couplings
¼Ùéáµè§Krista Witte, Oliver Seitz, and Chi-Huey Wong
˹éÒ1979

ª×èÍàÃ×èͧProbing the Specificity of Aminoglycoside-Ribosomal RNAInteractions with Designed Synthetic Analogs
¼Ùéáµè§Phil B. Alper, Martin Hendrix, Pamela Sears, and Chi-Huey Wong
˹éÒ1965

ª×èÍàÃ×èͧOne-Pot Colorimetric Differentiation of Polynucleotides withSingle Base Imperfections Using Gold Nanoparticle Probes
¼Ùéáµè§James J. Storhoff, Robert Elghanian, Robert C. Mucic, Chad A.Mirkin, and Robert L. Letsinger
˹éÒ1959

ª×èÍàÃ×èͧIntramolecular Triplet Energy Transfer in Bichromophores withLong Flexible Tethers
¼Ùéáµè§Petr Klan and Peter J. Wagner
˹éÒ2198

ª×èÍàÃ×èͧStrategies for Synthesis of Elastomeric Polypropylene: FluxionalMetallocenes with C(,1)-Symmetry
¼Ùéáµè§Raisa Kravchenko, Athar Masood, Robert M. Waymouth, and CharlesL. Myers
˹éÒ2039

ª×èÍàÃ×èͧOrder Determinations in Liquid Crystals by Dynamic Director NMRSpectroscopy
¼Ùéáµè§Min Zhou, Veronica Frydman, and Lucio Frydman
˹éÒ2178

ª×èÍàÃ×èͧTrapped Kinetic States, Chiral Amplification and MolecularChaperoning in Synthetic Polymers: Chiral Induction inPolyguanidines through Ion Pair Interactions
¼Ùéáµè§David S. Schlitzer and Bruce M. Novak
˹éÒ2196

ª×èÍàÃ×èͧMetal-Containing Oligonucleotides: Solid-Phase Synthesis andLuminescence Properties
¼Ùéáµè§Dennis J. Hurley and Yitzhak Tor
˹éÒ2194

ª×èÍàÃ×èͧFR-66979 Covalently Cross-Links the Binding Domain of theHigh-Mobility Group I/Y Proteins to DNA
¼Ùéáµè§Scott R. Rajski, Samuel B. Rollins, and Robert M. Williams
˹éÒ2192

ª×èÍàÃ×èͧGeneration of a Mixed- Valent Fe(III)Fe(IV) Form of IntermediateQ in the Reaction Cycle of Soluble Methane Monooxygenase, anAnalog of Intermediate X in Ribonucleotide Reductase R2 Assembly
¼Ùéáµè§Ann M. Valentine, Pedro Tavares, Alice S. Pereira, Roman Davydov,Carsten Krebs, Brian M. Hoffman, Dale E. Edmondson, Boi HanhHuynh, and Stephen J. Lippard
˹éÒ2190

ª×èÍàÃ×èͧA Novel Template Method for Prepararing UnidirectionalKinetically Inert Metal Complexes
¼Ùéáµè§Haim Weizman, Jacqueline Libman, and Abraham Shanzer
˹éÒ2188

ª×èÍàÃ×èͧCoordinatively Unsaturated Metal Centers in the Extended PorousFramework of Zn(,3)(BDC)(,3)(...)6CH(,3)OH (BDE =1,4-Benzenedicarboxylate)
¼Ùéáµè§Hailian Li, Charles E. Davis, Thomas L. Groy, Douglas G. Kelley,and O.M. Yaghi
˹éÒ2186

ª×èÍàÃ×èͧOrigin of (...)-Hairpin Stability in Solution: Structural andThermodunamic Analysis of the Folding of a Model Peptide SupportsHydrophobic Stabilization in Water
¼Ùéáµè§Allister J. Maynard, Gary J. Sharman, and Mark S. Searle
˹éÒ1996

ª×èÍàÃ×èͧSpiropentylacetyl-CoA, A Mechanism-Based Inactivator of Acyl-CoAA Dehydrogenases
¼Ùéáµè§Ding Li, Hui-qiang Zhou, Srikanth Dakoji, Injae Shin, Eugene Oh,and Hung-wen Liu
˹éÒ2008

ª×èÍàÃ×èͧE and Z Conformations of Esters, Thiol Esters, and Amides
¼Ùéáµè§Diwakar M. Pawar, Abdelnaser A. Khalil, Denise R. Hooks, KennethCollins, Tijuana Elliott, Jefforey Stafford, Lucille Smith, andEric A. Noe
˹éÒ2108

ª×èÍàÃ×èͧPyranose Ring Flexibility. Mapping of Physical Data for Iduronatein Continuous Conformational Space
¼Ùéáµè§Steffen Ernst, Ganesh Venkataraman, V. Sasisekharan, RobertLanger, Charles L. Cooney, and Ram Sasisekharan
˹éÒ2099

ª×èÍàÃ×èͧA New Mechanism for Nucleation Beneath Monolayer Films?
¼Ùéáµè§S. J. Cooper, R. B. Sessions, and S. D. Lubetkin
˹éÒ2090

ª×èÍàÃ×èͧEPR, Electronic Spectra, and Electron Transfer Properties of the17 Electron Carbonylhydrotris(triphenylphosphine)rhodium (II)Cation
¼Ùéáµè§Dmitri Menglet, Alan M. Bond, Kevin Coutinho, Ron S. Dickson,Georgii G. Lazarev, Scott A. Olsen, and John R. Pilbrow
˹éÒ2086

ª×èÍàÃ×èͧFour-Coordinate Molybdenum Chalcogenide Complexes Relevant toNitrous Oxide N-N Bond Cleavage by Three-CoordinateMolybdenum(III): Synthesis, Characterization, Reactivity, andThermochemistry
¼Ùéáµè§Adam R. Johnson, William M. Davis, Christopher C. Cummins,Scafford Serron, Steven P. Nolan, Djamaladdin G. Musaev, andKeiji Morokuma
˹éÒ2071

ª×èÍàÃ×èͧMonomeric InC(,6)H(,3)-2,6-Trip(,2) (Trip =C9,6)H(,2)-2,4,6-i-Pr(,3)) and Its Manganese Complex(n('5)-C(,5)H(,5))(CO)(,2)MnInC(,6)H(,3)-2,6-Trip(,2):One-Coordinate Indium in the Solid State
¼Ùéáµè§Scott T. Haubrich and Philip P. Power
˹éÒ2202

ª×èÍàÃ×èͧTheory-Assisted Determination of Absolute Sterochemistry forComplex Natural Products via Computation of Molar Rotation Angles
¼Ùéáµè§Rama K. Kondru, Peter Wipf, and David N. Beratan
˹éÒ2204

ª×èÍàÃ×èͧA Highly (...)-Stacked Organic Semiconductor for Thin FilmTransistors Based on Fused Thiophenes
¼Ùéáµè§Xiao-Chang Li, Henning Sirringhaus, Francis Garnier, Andrew B.Holmes, Stephen C. Moratti, Neil Feeder, William Clegg, Simon J.Teat, and Richard H. Friend
˹éÒ2206

ª×èÍàÃ×èͧNMR Motional Averaging in the Isotopically Perturbed CopeRearrangement
¼Ùéáµè§Eric R. Johnston, Jodi S. Barber,Marc Jacomet, and James C.Barborak
˹éÒ2208

ª×èÍàÃ×èͧControl of Dispersion of Ni('2)('+) Ions via Chelate Ligands inthe Preparation of Ni/SiO(,2) Materials. A XAFS Study
¼Ùéáµè§J. Y. Carriat, M. Che, M. Kermarec, M. Verdaguer, and A.Michalowicz
˹éÒ2059

ª×èÍàÃ×èͧExtensive Studies on (...)-Stacking of Poly(3-alkylthiophene-2,5-diyl)s and Poly (4-alkylthiazole-2,5-diyl)(s by OpticalSpectroscopy, NMR Analysis, Light Scattering Analysis, and X-rayCrystallography
¼Ùéáµè§Takakazu Yamamoto, Dharma Komarudin, Minoru Arai, Bang-Lin Lee,Hajime Suganuma, Naoki Asakawa, Yoshio Inoue, Kenji Kubota,Shintaro Sasaki, Takashi Fukuda, and Hiro Matsuda
˹éÒ2047

ª×èÍàÃ×èͧLithium Ephedrate-Mediated Addition of a Lithium Acetylide to aKetone: Solution Structures and Relative Reactivities of MixedAgregates Underlying the High Enantioselectivities
¼Ùéáµè§Andrew Thompson, Edward G. Corley, Martha F. Huntington, EdwardJ. J. Grabowski, Julius F. Remenar, and David B. Collum
˹éÒ2028

ª×èÍàÃ×èͧMechanistic Crossover Induced by Steric Hindrance: A TheoreticalStudy of Electron Transfer and Substitution Mechanisms ofCyanoformaldehyde Anion Radical and Alkyl Halides
¼Ùéáµè§G. Narahari Sastry and Sason Shaik
˹éÒ2131

ª×èÍàÃ×èͧSolution ('1)H NMR Study of the Electronic Structure and MagneticProperties of High-Spin Ferrous or Deoxy Myoglobins
¼Ùéáµè§Catherine M. Bougault, Yi Dou, Masao Ikeda-Saito, Kevin C.Langry, Kevin M. Smitt, and Gered N. La Mar
˹éÒ2113

ª×èÍàÃ×èͧReactions of Olefin Polymerization Activators with ComplexedPentamethylcyclopentadienyl Ligands: Abstraction ofTetramethylfulvalene
¼Ùéáµè§William J. Evans, Kevin J. Forrestal, Mohammad A. Ansari, andJoseph W. Ziller
˹éÒ2180

ª×èÍàÃ×èͧA Computational Study of the Proton-Transfer Chemistry of theSilaformyl Anion
¼Ùéáµè§Jon A. Rusho, Mark S. Gordon, Niels H. Damrauer, and RobertDamrauer
˹éÒ2124

ª×èÍàÃ×èͧUnexpected Enzymatic Fucosylation of the Hindered TertiaryAlcohol of 3-C-Methyl-N-Acetyllactosamine Produces a NovelAnalogue of the LeX- Trisaccharide
¼Ùéáµè§Xiangping Qian, Ole Hindsgaul, Hong Li, and Monica M. Palcic
˹éÒ2184

ª×èÍàÃ×èͧMechanistic Studies of an Antibody-Catalyzed PericyclicRearrangement
¼Ùéáµè§Edwaed M. Driggers, Ho S. Cho, Corey W. Liu, Catherine P. Katzka,Andrew C. Braisted, Helle D. Ulrich, David E. Wemmer and Peter G.Schultz
˹éÒ1945

ª×èÍàÃ×èͧStrand Invasion of Supercoiled DNA by Oligonucleotides with aTriplex Guide Sequence
¼Ùéáµè§Howard B. Gamper, Jr., Ya-Ming Hou, Michael R. Stamm, Mikhail A.Podyminogin, and Rich B. Meyer
˹éÒ2182

ª×èÍàÃ×èͧComparison of the Singlet, Triplet Energy Gap of a SymmetricalDiradical Dication with ET Parameters Derived from Its OpticalSpectrum
¼Ùéáµè§Stephen F. Nelsen, Rustem F. Ismagilov, and Yoshio Teki
˹éÒ2200

ª×èÍàÃ×èͧAnalysis of Amidinium Guest Complexation by Comparison of TwoClasses of Dendrimer Hosts Containing a Hydrogen Bonding Unit atthe Core
¼Ùéáµè§Steven C. Zimmerman, Yue Wang, P. Bharathi, and Jeffrey S. Moore
˹éÒ2172

ª×èÍàÃ×èͧGlucose in Aqueors Solution by Fist Principles Molecular Dynamics
¼Ùéáµè§C. Moliteni and M. Parrinello
˹éÒ2168

ª×èÍàÃ×èͧNMR Structure of Two Cyclic Oligonucleotides. A Monomer-DimerEquilibrium between Dumbbell and Quadruplex Structures
¼Ùéáµè§Carlos Gonzalez, Nuria Escaja, Manuel Rico, and Enrique Pedroso
˹éÒ2176

ª×èÍàÃ×èͧNeutral and Alkaline Hydrolyses of Model (...)-LactamAntibiotics. An ab Initio Study of Water Catalysis
¼Ùéáµè§Jesus Pitarch, Manuel F. Ruiz-Lopez, Estanislao Silla, Juan-LuisPascual-Ahuir, and Inaki Tunon
˹éÒ2146

ª×èÍàÃ×èͧEvidence for a Stable Ti(IV) Metallocene Dihydrogen Complex fromab Initio Molecular Dynamics
¼Ùéáµè§Peter M. Margl, Tom K, Woo, Peter E. Blochl, and Tom Ziegler
˹éÒ2174

ª×èÍàÃ×èͧFactors Governing the Enhanced Reactivity of Five-Membered CyclicPhosphate Esters
¼Ùéáµè§Nai-yuan Chang and Carmay Lim
˹éÒ2156

Vol. 120 No.8,4 March 1998
ª×èÍàÃ×èͧEffects of Bridge Redox State Levels on the Electron Transfer andOptical Properties of Intervalence Compounds with HydrazineCharge-Bearing Units
¼Ùéáµè§Stephen F. Nelsen Rustem F.Ismagilov and Douglas R. Powell
˹éÒ1924

ª×èÍàÃ×èͧStructures and Spectroscopic Characteristics of 5,6 - Dihydro-6-thymyl and 5,6 - Dihydro -5- thymyl Radicals by an IntegratedQuantum Mechanical Approach Including Electronic, Vibrational,and Solvent Effects
¼Ùéáµè§F. Jolibois, J. Cadet, A. Grand, R. Subra, N. Rega, and V. Barone
˹éÒ1864

ª×èÍàÃ×èͧRapid Screening of Binding Affinities: Application of the(...)-Dynamics Method to a Trypsin-Inhibitor System
¼Ùéáµè§Zhuyan Guo and Charles L. Brooks, III
˹éÒ1920

ª×èÍàÃ×èͧSynthesis of the Unusual Diterpenoid Tropones Hainanolidol andHarringtonolide
¼Ùéáµè§Barbara Frey, Adam P. Wells, Daniel H. Rogers and Lewis N. Mander
˹éÒ1914

ª×èÍàÃ×èͧAsymmetric Arylation of Ketone Enolates
¼Ùéáµè§Jens Ahman, John P. Wolfe, Malisa V. Troutman, Michael Palucki,Stephen L. Buchwald
˹éÒ1918

ª×èÍàÃ×èͧDimerization of Soilaethylene: Computational Evidence for a NovelMechanism for the Formation of 1,3-Disilacyclobutane via a 1,2Approach
¼Ùéáµè§Alessandro Venturini, Fernando Bernardi, Massimo Olivucci,Michael A. Robb and Ivan Rossici
˹éÒ1912

ª×èÍàÃ×èͧThe First Total Synthesis of Bacterial Cell Wall PrecursorUDP-N_Acetylmuramyl-Pentapeptide (Park Nucleotide)
¼Ùéáµè§Stephen A. Hitchcock, Clark N. Eid, James A. Aikins, MohammadZia-Ebrahimi and Larry C.Blaszczak
˹éÒ1916

ª×èÍàÃ×èͧW(CO)(,5).THF-Catalyzed Endo-selective Cyclization of(...)-Acetylenic Silyl Enol Ethers
¼Ùéáµè§Katsuya Maeyama and Nobuharu Iwasawa
˹éÒ1928

ª×èÍàÃ×èͧStereospecific Cationic [1,2] Silyl Shife with Retention ofConfiguration at the Migrating Terminus
¼Ùéáµè§Michinori Suginome, Akira Takama and Yoshihiko Ito
˹éÒ1930

ª×èÍàÃ×èͧNovel Nickel(II)- and Palladium(II)-Based Catalytic Systems forthe Synthesis of Hyperbranched Polymers from Ethene
¼Ùéáµè§Jang Sub Kim, James H. Pawlow, Louis M. Wojcinski II, ShahidMurtuza, Smita Kacker and Ayusman Sen
˹éÒ1932

ª×èÍàÃ×èͧCycloaddition Reaction of Zirconacyclopentadienes to Alkynes:Highlh Selective Formation of Benzene Derivatives from ThreeDifferent Alkynes
¼Ùéáµè§Tamotsu Takahashi, Zhenfeng Xi, Akiko Yamazaki, Yuanhong Liu,Kiyohiko Nakajima, and Martin Kotora
˹éÒ1672

ª×èÍàÃ×èͧConstitution, Configuration, and the Optical Activity of ChiralDendrimers
¼Ùéáµè§James R. McElhanon and Dominic V. McGrath
˹éÒ1647

ª×èÍàÃ×èͧRetention of Regiochemistry of Allylic Esters in Palladium -Catalyzed Allylic Alkylation in the Presence of a MOP Ligand
¼Ùéáµè§]Tamio Hayashi, Motoi Kawatsura, and Yasuhiro Uozumi
˹éÒ1681

ª×èÍàÃ×èͧMolecular Orientation Distributions in Protein Films. 4. AMultilayer Composed of Yeast Cytochrome c Bound through anIntermediate Streptavidin Layer to a Planar SupportedPhospholipid Bilayer
¼Ùéáµè§Paul L. Edmiston and S. Scott Saavedra
˹éÒ1665

ª×èÍàÃ×èͧPreduction of Rate Constants for Cyanohydrin Formation UsingEquilibrium Constants and Distortion Energes
¼Ùéáµè§J. Peter Guthrie
˹éÒ1688

ª×èÍàÃ×èͧElectronic Structure Studies of 1,2- Didehydrogenation of Arenesand Rearrangement of Arynes to AnnelatedCyclopentadienylidenecarbenes
¼Ùéáµè§Jerzy Cioslowski, Pawel Piskorz, and David Moncrieff
˹éÒ1695

ª×èÍàÃ×èͧFacile 1,3 - Shift of Chlorine in a Chlorocarbonylketene
¼Ùéáµè§Justin Finnerty, John Andraos, Yohsuke Yamamoto, Ming Wah Wong,and Curt Wentrup
˹éÒ1701

ª×èÍàÃ×èͧCyanine Borate Penetrated Ion Pair Structures in Solution and theSolid State: Induced Circular Dichroism
¼Ùéáµè§David J. Owen, Donald VanDerveer, and Gary B. Schuster
˹éÒ1705

ª×èÍàÃ×èͧIon Pair Properties of Lithium and Cesium Salts of Carbazole
¼Ùéáµè§Alessandro Abbotto, Andrew Streitwieser, Manolis Stratakis, andJames A. Krom
˹éÒ1718

ª×èÍàÃ×èͧHighly Regio - and Stereoselective [3+2] CyclopentanoneAnnulation Using a 3- (Alkylthio) -2 siloxyallyl Cationic Species
¼Ùéáµè§Keiichichi Masuya, Kei Domon, Keiji Tanino, and Isao Kromajima
˹éÒ1724

ª×èÍàÃ×èͧDesign, Synthesis, and Photochemical Properties of aPhotoreleasable Ubiquinol - 2: A Novel Compound for StudyingRapid Electron - Transfer Kinetics in Ubiquinol - OxidizingEnzymes
¼Ùéáµè§Michael H. B. Stowell, Guangyang Wang, Michael W. Day, and SunneyI. Chan
˹éÒ1657

ª×èÍàÃ×èͧBiosynthesis of Vitamin B(,6): The Oxidation of4-(Phosphohydroxy)-L-threonine by PdxA
¼Ùéáµè§David E. Cane, Yuju Hsiung, Julie A. Cornish, J. KennethRobinson and Ian D. Spenser
˹éÒ1936

ª×èÍàÃ×èͧDetermination of the Internal Rotation Barrier of[('15)N]Formamide from Gas-Phase ('1)H NMR Spectra
¼Ùéáµè§Angela N. Taha, Susan M. Neugebauer Crawford and Nancy S. True
˹éÒ1934

ª×èÍàÃ×èͧSynthesis, Structure, and Reactivity of Neutral(...)('3)-Propargylpalladium Complexes
¼Ùéáµè§Ken Tsutsumi, Sensuke Ogoshi, Shinji Nishiguchi and Hideo Kurosawa
˹éÒ1938

ª×èÍàÃ×èͧStructure and Morphology of Helicene Fibers
¼Ùéáµè§Andrew J. Lovinger, Colin Nuckolls and Thomas J. Katz
˹éÒ1944

ª×èÍàÃ×èͧStudies on the Electroactive Helterocycles C(,6)S(,8)(,0/2)- andC(,6)S(,6)O(,2)('1/2) Related Metal Complexes
¼Ùéáµè§Jun - Hong Chou, Thomas B. Rauchfuss, and Lisa F. Szczepura
˹éÒ1805

ª×èÍàÃ×èͧThe Synthesis, Aromaticity, and NMR Properties of [14] AnnuleneFused Organometallics. Determination of the Effective BondLocalizing Ability ('Relative Aromaticity') and DiamagneticAnisotropy of Several Organometallic Moieties
¼Ùéáµè§Reginald H. Mitchell, Yongsheng Chen, Nasr Khalifa, and PengzuZhou
˹éÒ1785

ª×èÍàÃ×èͧThe Use of Density Functional Theory To Understand and PredictStructures and Bonding in Main Group Compounds with MultipleBonds
¼Ùéáµè§F. Albert Cotton, Alan H. Cowley, and Xuejun Feng
˹éÒ1795

ª×èÍàÃ×èͧOn the Possible Structures of Mn(,2)(CO)(,8): Theoretical Supportfor an Unprecedented Asymmetric Unbridged Isomer
¼Ùéáµè§Timothy A. Barckholtz and Bruce E. Bursten
˹éÒ1926

ª×èÍàÃ×èͧTemperature Dependence of Cation Distribution and Oxidation Statein Magnetic Mn- Fe Ferrite Nanocrystals
¼Ùéáµè§Z. John Zhang, Zhong L. Wang, Bryan C. Chakoumakos, and Jin S.Yin
˹éÒ1800

ª×èÍàÃ×èͧOrbital Overlap and Antiferromagnetic Coupling in SubstitutedTetraphenylporphinatomanganate (III) Tetracyanoethenide BasedMagnets. The Importance of Q-d(,z)('2)('-)p(,z) Overlap
¼Ùéáµè§Erik J. Brandon, Christian Kollmar, and Joel S. Miller
˹éÒ1822

ª×èÍàÃ×èͧFirst Studies of the Transition Metal-Catalyzed [5+2]Cycloadditions of Alkenes and Vinylcyclopropanes: Scope andStereochemistry
¼Ùéáµè§Paul A. Wender, Craig O. Husfeld, Elke Langkopf and Jennifer A. Love
˹éÒ1940

ª×èÍàÃ×èͧHighly Electrophilic Olefin Polymerization Catalysts. QuantitativeReaction Coordinates for Fluoroarylborane/Alumoxane MethideAbstraction and Ion - Pair Reorganization in Group 4 Metalloceneand 'Constrained Geomety' Catalysts
¼Ùéáµè§Paul A. Deck, Colin L. Beswick, and Tobin J.Marks
˹éÒ1772

ª×èÍàÃ×èͧOrganolanthanide - Catalyzed Intra - and Intermolecular Tandem C- N and C - C Bond - Forming Processes of AminodialkenesAminodialkynes, Aminoalkeneynes, and Aminolkynes. New RegiospecificApproaches to Pyrrolizidine, Indolizidine, Pyrrole, and PyrazineSkel
¼Ùéáµè§Yanwu Li and Tobin J. Marks
˹éÒ1757

ª×èÍàÃ×èͧDouble Diastereoselection in Intramolecular Phtocycloadditions: ARadical Rearrangement Approach to the Total Synthesis of theSpirovetivane Phytoalexin (...) - Lubiminol
¼Ùéáµè§Michael T. Crimmins, Zhuo Wand, and Lynne A. McKerlie
˹éÒ1747

ª×èÍàÃ×èͧA New Route to Dihydrodithiins by a Catalytic Reaction ofVinylthiiranes with W(CO)(,5)(NCMe)
¼Ùéáµè§Richard D. Adams, J. W. Long, IV and Joseph L. Perrin
˹éÒ1922

ª×èÍàÃ×èͧSpectroscopy and Absolute Reactivity of Ketenes in AcetonitrileStudied by Laser Flash Photolysis with Time - Resolved InfraredDetection
¼Ùéáµè§Brian D. Wagner, Bradley R. Arnold, Gerald S. Brown, and JanuszLusztyk
˹éÒ1827

ª×èÍàÃ×èͧTransition-Metal Ethene Bonds: Thermochemistry of M(,+)(C(,2)H(,4))(,n) (M =Ti-Cu, n = 1 and 2) Complexes
¼Ùéáµè§M. R. Sievers, L. M. Jarvis and P. B. Armentrout
˹éÒ1891

ª×èÍàÃ×èͧSynthesis and Properties of Ring - Deactivated Deuterated(Hydroxymethyl) pyrroles
¼Ùéáµè§Andrew D. Abell, Brent K. Nabbs, and Alan R. Battersby
˹éÒ1741

ª×èÍàÃ×èͧTotal Synthesis of (...) - and (+) - Valienamine via a StrategyDerived from New Palladium - Catalyzed Reactions
¼Ùéáµè§Barry M. Trost, Louis S. Chupak, and Thomas Lubbers
˹éÒ1732

ª×èÍàÃ×èͧOptical Transformation and Fission of Single Giant Vesicles inWater by Radiation Pressure
¼Ùéáµè§Noboru Kitamura, Naomi Sekiguchi and Haeng-Boo Kim
˹éÒ1942

ª×èÍàÃ×èͧA Valence Bond Perspective on the Molecular Shapes of SimpleMetal Alkyls and Hydrides
¼Ùéáµè§Clark R. Landis, Timothy K. Firman, Daniel M. Root, and ThomasCleveland
˹éÒ1842

ª×èÍàÃ×èͧEffect of Ancillary Ligands on Ru(II) on ElectronicDelocalization in Ruthenium (II) Bisferrocenylacetylide Complexes
¼Ùéáµè§Youngbao Zhu, Olivier Clot, Michael O. Wolf, and Glenn P. A. Yap
˹éÒ1812

ª×èÍàÃ×èͧAcid-Base Catalyzed Reactions in Ionic Water Clusters
¼Ùéáµè§Uwe Achatz, Stefan Joos, Christian Berg, Thomas Schindler, MartinBeyer, Gerhard Albert, Gereon Niedner-Schatteburg, and Vladimir E.Bondybey
˹éÒ1876

ª×èÍàÃ×èͧEpoxidation by Dimethyldioxirane: Effects of Intramolecular andIntermolecular Interactions
¼Ùéáµè§Karol Miaskiewicz and Douglas A. Smith
˹éÒ1872

ª×èÍàÃ×èͧIsotopomer Selective Spectroscopy on Pentacene
¼Ùéáµè§Jurgen Kohler, Albert-Jan C. Brouwer, Edgar J. J Groenen and JanSchmidt
˹éÒ1900

ª×èÍàÃ×èͧFirst - Principle Determination of Peptide Conformations inSolvents: Combination of Monte Carlo Simulated Annealing and RISMTheory
¼Ùéáµè§Masahiro Kinoshita, Yuko Okamoto, and Fumio Hirata
˹éÒ1855

ª×èÍàÃ×èͧPhotochemical Rearrangement of Enediynes: Is a 'Photo - Bergman'Cyclization a Possibility?
¼Ùéáµè§Ariella Evenzahav and Nicholas J. Turro
˹éÒ1835

ª×èÍàÃ×èͧReactivity of Monolayer-Protected Gold Cluster Molecules StericEffects
¼Ùéáµè§Allen C. Templeton, Michael J. Hostetler, Cynthia T. Kraft and RoyceW. Murray
˹éÒ1906

Vol. 120 No.7,25 February 1998
ª×èÍàÃ×èͧSynthesis of Novel Poly ((...) - caprolactone) a Functionalizedwith a Thioester End - Group via a Living Ring OpeningPolymerization and Their Application in Chemoselective Ligationwith Compounds Containing a Cysteine Terminal
¼Ùéáµè§Qiang Ni and Luping Yu
˹éÒ1645

ª×èÍàÃ×èͧNitrenium Ions from Food - Derived Heterocyclic ArylamineMutagens
¼Ùéáµè§Michael Novak, Lulu Xu, and Rebecca A. Wolf
˹éÒ1643

ª×èÍàÃ×èͧEvidence for Interception of Nonstatistical Reactive Trajectoriesfor a Singlet Biradical in Supercritical Propane
¼Ùéáµè§Mayra B. Reyes and Barry K. Carpenter
˹éÒ1641

ª×èÍàÃ×èͧChemical Shift Tensons and NICS Calculations for Stable Silylenes
¼Ùéáµè§Robert West, Jarrod J. Buffy, Michael Haaf, Thomas Muller,Barbara Gehrhus, Michael F. Lappert, and Yitzhak Apeloig
˹éÒ1639

ª×èÍàÃ×èͧHighly Diastereoselective Cyclizations of Bishomoallylic TertiaryAlcohols Promoted by Rhenium (VII) Oxide. Critical Steric versusChelation Effects in Alkoxyrthenium Intermediates
¼Ùéáµè§Yoshiki Morimoto and Toshiyuki Iwai
˹éÒ1633

ª×èÍàÃ×èͧAcidic and Basic Hydrolysis of an Optically Pure Spiro -(...)('4) - sulfurane: Completely Opposite Stereochemical Outcome
¼Ùéáµè§Jian Zhang, Shinichi Saito, and Toru Koizumi
˹éÒ1631

ª×èÍàÃ×èͧP - Chiral Bis (trialkylphosphine) Ligands and Their Use inHighli Enantioselective Hydrogenation Reactions
¼Ùéáµè§Tsuneo Imamoto, Junko Watanabe, Yoshiyuki Wada, Hideki Masuda,Hironari Yamada, Hideyuki Tsuruta, Satoru Matsukawa,and Kentarro Yamaguchi
˹éÒ1635

ª×èÍàÃ×èͧA Concise Total Synthesis of Dysidiolide through Application of aDioxolenium - Mediated Diels - Alder Reaction
¼Ùéáµè§Steven R. Magnuson, Laura Sepp - Lorenzino, Neal Rosen, andSamuel J. Danishefsky
˹éÒ1615

ª×èÍàÃ×èͧAn Experimental and Theoretical Investigation of Ion-MoleculeReactions Involving Methyl Halide Radical Cations with MethylHalides
¼Ùéáµè§Linda S. Nichols, Michael L. McKee,and Andreas J. Ollies
˹éÒ1538

ª×èÍàÃ×èͧCoordination of Cu(,+) Ions to Zeolite Frameworks StronglyEnhances Their Ability To Bind NO(,2). An ab Initio DensityFunctional Study
¼Ùéáµè§Luis Rodriguez-Santiago, Marek Sierka, Vicenc Branchadell,Mariona Sodupe,and Joachim Sauer
˹éÒ1545

ª×èÍàÃ×èͧThe Catalyzed Hydrosilation Reaction
¼Ùéáµè§Brett M. Bode, Paul N. Day, Mark S. Gordon
˹éÒ1552

ª×èÍàÃ×èͧAcidity Differences between Inorganic Solids Induced by TheirFramework Structure. A Combined Quantum Mechanics/MolecularMechanics ab Initio Study on Zeolites
¼Ùéáµè§Martin Brandle and Joachim Sauer
˹éÒ1556

ª×èÍàÃ×èͧSymmetry Rules for Transition Structures in Degenerate Reactions
¼Ùéáµè§L.J. Schaad and Jiani Hu
˹éÒ1571

ª×èÍàÃ×èͧTheoretical Study of Substituent Effects in the Diimine - M (II)Catalyzed Ethylene Polymerization Reaction Using the IMOMM Method
¼Ùéáµè§Robert D. J. Froese, Djamaladdin G. Musaev, and Keiji Morokuma
˹éÒ1581

ª×èÍàÃ×èͧStrategy in Oligosaccharide Synthesis : An Application to aConcise Tolal Synthesis of the KH- 1 (adenocarcinoma) Antigen
¼Ùéáµè§Prashant P. Deshpande, Hyunjin M. Kim, Andrzej Zatorski, Tae -Kyo Park, Govindaswami Ragupathi, Philip O. Livingston, DavidLive, and Samuel J. Danishefsky
˹éÒ1600

ª×èÍàÃ×èͧFirst - Order Jahn - Teller Effect, Not Metal - Metal Bonding, IsResponsible for Structural Distortion inSn(,6)(u(,3)-O)(,4)(u(,3)-OR)(,4) Excited States
¼Ùéáµè§Frederick P. Arnold, Jeremy K. Burdett, and Lawrence R. Sita
˹éÒ1637

ª×èÍàÃ×èͧRadiolytic Silylation of Alkenes and Alkynes by GaseousR(,3)Si(,+) Ions. Stereochemical Evidence for the (...)-silylEffect
¼Ùéáµè§Barbara Chiavarino, Maria Elisa Crestoni,and Simonetta Fornarini
˹éÒ1523

ª×èÍàÃ×èͧEffect of Solvent Polarity, pH, and Metal Complexation on theTriple Fluorescence of4-(N-1,4,8,11-tetraazacyclotetradecy)benzonitrile
¼Ùéáµè§Greg E. Collins, Ling-Siu Choi,and John H. Callahan
˹éÒ1474

ª×èÍàÃ×èͧSynthesis of the Hexasaccharide Fragment of Landomycin A:Application of Glycosyl Tetrazoles and Phosphites in theSynthesis of a Deoxyoligosaccharide
¼Ùéáµè§Yu Guo, and Gary A. Sulikowski
˹éÒ1392

ª×èÍàÃ×èͧA New, Efficient, and in Some Cases Highly RegioselectiveWater-Soluble Polymer Rhodium Catalyst for Olefin Hydroformylation
¼Ùéáµè§Abdelaziz Nait Ajjou, Howard Alper
˹éÒ1466

ª×èÍàÃ×èͧExperimental Electron Density Studies for Investigating the Metal(...)-Ligand Bond: the Case of Bis(1,5-cyclooctadiene)nickel
¼Ùéáµè§Piero Macchi,Davide M. Proserpio,and Angelo Sironi
˹éÒ1447

ª×èÍàÃ×èͧAlkyne Ligand Enhancement of the Substitution Lability ofMononuclear Osmium, Ruthenium, and Iron Carbonyls
¼Ùéáµè§Jean Pearson, Jason Cooke, Josef Takats,and R. B. Jordan
˹éÒ1434

ª×èÍàÃ×èͧLewis Base-Free Phenyllithium: Determination of the Solid-StateStructure by Synchrotron Powder Diffraction
¼Ùéáµè§Robert E. Dinnerbier, Ulrich Behrens,and Falk Olbrich
˹éÒ1430

ª×èÍàÃ×èͧMechanistic Study of Ruthenium-Catalyzed Hydrosilation of1-(Trimethylsilyl)-1-buten -3-yne
¼Ùéáµè§Yooichiroh Maruyama, Kunihiro Yamamura,Isao Nakayama, KeigoYoshiuchi,and Fumiyuki Ozawa
˹éÒ1421

ª×èÍàÃ×èͧp-Cresol As a Reversible Acylium Ion Scavenger in Solid-PhasePeptide Synthesis
¼Ùéáµè§Les P. Miranda, Alun Jones, Wim D. F. Meutermans,and Paul F. Alewood
˹éÒ1410

ª×èÍàÃ×èͧX-ray Synchrotron Study of Packing and Protrusions ofPolymer-Lipid Monolayers at the Air-Water Interface
¼Ùéáµè§J. Majewski, T. L. Kuhl, K. Kjaer, M. C. Gerstenberg, J.Als-Nielsen, J. N. Israelachvili, G. S. Smith
˹éÒ1469

ª×èÍàÃ×èͧEthyl Glucoside as a Multifunctional Initiator forEnzyme-Catalyzed Regioselective Lactone Ring-OpeningPolymerization
¼Ùéáµè§Kirpal S. Bisht, Fang Deng, Richard A. Gross, David L. Kaplan,and Graham Swift
˹éÒ1363

ª×èÍàÃ×èͧReversible Light-Induced Morphological Change inLangmuir-Blodgett Films
¼Ùéáµè§Mutsuyoshi Matsumoto, Daisuke Miyazaki, Motoo Tanaka, ReikoAzumi, Eiichiro Manda, Yukishige Kondo, Norio Yoshino,and HiroakiTachibana
˹éÒ1479

ª×èÍàÃ×èͧConformational Study of Cyclohexene Oxide by Dynamic NMRSpectroscopy and Ab Initio Molecular Orbital Calculations
¼Ùéáµè§Diwakar M. Pawar,and Eric A. Noe
˹éÒ1485

ª×èÍàÃ×èͧNMR Motional Averaging in the Isotopically Perturbed CopeRearrangement
¼Ùéáµè§Eric R.Johnston, Jodi S. Barber, Marc Jacomet,and James C. Barborak
˹éÒ1489

ª×èÍàÃ×èͧGas-Phase Structures and Conformational Properties of tert-ButylVinyl Ether and (Z)-Methyl 1-Propenyl Ether
¼Ùéáµè§Christiane Leibold,and Heinz Oberhammer
˹éÒ1533

ª×èÍàÃ×èͧStereochemical Control of the DNA Binding Affinity, SequenceSpecificity, and Orientation Preference of Chiral HairpinPolyamides in the Minor Groove
¼Ùéáµè§David M. Herman, Eldon E. Baird,and Peter B. Dervan
˹éÒ1382

ª×èÍàÃ×èͧKinetic Studies of Poly (tetrahydrofuran) Epitaxial Film Formedby Polymerization - Induced Epitaxy Using Atomic Force Microscopy
¼Ùéáµè§Masahito Sano,and Momoyo Wada
˹éÒ1374

ª×èÍàÃ×èͧDiscovery of a Novel Non - Peptide Somatostatin Agonist withSST(,4) Selectivity
¼Ùéáµè§Michael Ankersen, Michael Crider, Shengquan Liu, Bin Ho, HenrikS. Andersen, and Carsten Stidsen
˹éÒ1368

ª×èÍàÃ×èͧThermal and Photochemical [2+2] Cycloreversion of a1,2-Disilacyclobutane and a 1,2-Digermacyclobutane
¼Ùéáµè§Yitzhak Apeloig, Dmitry Bravo-Zhivotovskii, Ilya Zharov,Vladislav Panov, William J. Leigh,and Gregory W. Sluggett
˹éÒ1398

ª×èÍàÃ×èͧAqueous Ethanolysis of Unstrained Sterically CongestedHomoallylic Halides
¼Ùéáµè§Xicai Huang, Kelly S. E. Tanaka,and Andrew J. Bennet
˹éÒ1405

ª×èÍàÃ×èͧSpectroscopic Comparisons of MoW(porphyrin)(,2) Heterodimers withHomologous Mo(,2) and W(,2) Quadruple Bonds: A Dynamic NMR andResonance Raman Study
¼Ùéáµè§James P. Collman, S. T. Harford, Stefan Franzen, T. A. Ederspacher,Richard K. Shoemaker, and William H. Woodruff
˹éÒ1456

ª×èÍàÃ×èͧChemical and Thermodynamic Properties of Methyl Chloride DimerRadical Cations in the Gas Phase
¼Ùéáµè§Sam P. de Visser, Leo J. de Koning,and Nico M. M. Nibbering
˹éÒ1517

ª×èÍàÃ×èͧElectron Spectroscopic Studies of CH(,3)OH Chemisorption onCu(,2)O and ZnO Single-Crystal Surfaces: Methoxide Bonding andReactivity Related to Methanol Synthesis
¼Ùéáµè§Paul M. Jones, Jennifer A. May, J. Brad Reitz, Edward I. Solomon
˹éÒ1506

ª×èÍàÃ×èͧStudy of Dispersion in Packed Chromatographic Columns by PulsedField Gradient Nuclear Magnetic Resonance
¼Ùéáµè§Ulrich Tallarek, Ernst Bayer,and Georges Guiochon
˹éÒ1494

ª×èÍàÃ×èͧA Solid-State Nitrogen-15 Nuclear Magnetic Resonance Spectroscopicand Quantum Chemical Investigation of Nitrosoarene-MetalInteractions in Model Systems and in Heme Proteins
¼Ùéáµè§Renzo Salzmann, Mark Wojdelski, Michael McMahon, Robert H.Havlin,and Eric Oldfield
˹éÒ1349

ª×èÍàÃ×èͧHigh-Resolution Time-of-Flight Mass Spectra ofAlkanethiolate-Coated Gold Nanocrystals
¼Ùéáµè§Randy J. Arnold,and James P. Reilly
˹éÒ1528

ª×èÍàÃ×èͧSynthesis of Asialo GM(,1). New Insights in the Application ofSulfonamidoglycosylation in Oligosaccharide Assembly: SubtleProximity Effects in the Stereochemical Governanceof Glycosidation
¼Ùéáµè§Ohyun Kwon and Samuel J. Danishefsky
˹éÒ1588

ª×èÍàÃ×èͧKinetic Resolution of Alcohols Catalyzed by TripeptidesContaining the N- Alkylimidazole Substructure
¼Ùéáµè§Scott J. Miller, Gregory T. Copeland, Nikolaos Papaioannou,Thomas E. Horstmann, and Elizabeth M. Ruel
˹éÒ1629

ª×èÍàÃ×èͧLiving Ring - Opening Metathesis Polymerization in Water
¼Ùéáµè§David M. Lynn, Bernhard Mohr, and Robert H. Grubbs
˹éÒ1627

ª×èÍàÃ×èͧTemplated Nucleation in a Dynamic Environment: Crystallization inFoam Lamellae
¼Ùéáµè§Bao - Dong Chen, Jan. J. Cilliers, Roger J. Davey, John Garside,and Edward T. Woodburn
˹éÒ1625

ª×èÍàÃ×èͧRapid Enzyme - Catalyzed Heterolytic C - H Bond Cleavage by aBase Strength Amplification Mechanism: A Theoretical Examintionof the Mechanism of Oxidation of Vitamin K
¼Ùéáµè§Ya - Jun Zheng and Thomas C. Bruice
˹éÒ1623

ª×èÍàÃ×èͧSoluble Conjugated Polymers That Contain Ferrocenylene Units inthe Backbone
¼Ùéáµè§Richard W. Heo, Fernando B. Somoza, and T. Randall Lee
˹éÒ1621

ª×èÍàÃ×èͧHomoaromaticity in Carbene Intermediates
¼Ùéáµè§Peter K. Freeman
˹éÒ1619

ª×èÍàÃ×èͧToward an Understanding of Molecular Mechanism of DominoCycloadditions. Density Functional Theory Study of the Reactionbetween Hexafluorobut - 2 -yne and N,N' -Dipyrrolylmethane
¼Ùéáµè§Luis R. Domingo, Manuel Arno, and Juan Andres
˹éÒ1617

ª×èÍàÃ×èͧStructure of the Diamine-Rh(I) Precursor in the AsymmetricHydride Transfer Reduction of Ketones: A Theoretical andExperimental Approach
¼Ùéáµè§Maud Bernard, Vincent Guiral, Francoise Delbecq, Fabienne Fache,Philippe Sautet,and Marc Lemaire
˹éÒ1441

Vol. 120 No.6,18 February 1998
ª×èÍàÃ×èͧHydrothermal Synthesis of a Dense Metal-Organic Layered FrameworkThat Contains Cu(I)-Olefinic Bonds, Cu(,2)(O(,2)CCH=CHCO(,2))
¼Ùéáµè§Dianna M. Young, Urs Geiser, Arthur J. Schultz, and H. Hau Wang
˹éÒ1331

ª×èÍàÃ×èͧScalar and Dipolar Coupling Studies of Organocuprates
¼Ùéáµè§T. Andrew Mobley, Frank Muller, and Stefan Berger
˹éÒ1333

ª×èÍàÃ×èͧPlanar Hexasilylbenzene Dianion with Thermally Accessible TripletState
¼Ùéáµè§Keisuke Ebata, Wataru Setaka, Tsuyotoshi Inoue, Chizuko Kabuto,Mitsuo Kira, and Hideki Sakurai
˹éÒ1335

ª×èÍàÃ×èͧAn Enantioselective Construction of the ABC System of Taxol
¼Ùéáµè§Gilbert Stork, Kei Manabe, and Longbin Liu
˹éÒ1337

ª×èÍàÃ×èͧLewis Acid Mediated Functionalization of Porous Silicon withSubstituted Alkenes and Alkynes
¼Ùéáµè§Jillian M. Buriak and Matthew J. Allen
˹éÒ1339

ª×èÍàÃ×èͧHydrogenation without a Metal Catalyst: An ab Initio Study on theMechanism of the Metal-Free Hydrogenase from Methanobacteriumthermoautotrophicum
¼Ùéáµè§Joaquim H. Teles, Stefan Brode, Albrecht Berkessel
˹éÒ1345

ª×èÍàÃ×èͧInfluence of Interchain Interactions on the Absorption andLuminescence of Conjugated Oligomers and Polymers: A Quantum -Chemical Charaterization
¼Ùéáµè§J. Cornil, D. A. dos Santos, X. Crispin, R. Silbey, J. L. Bredas
˹éÒ1289

ª×èÍàÃ×èͧStructure of Bombyx mori Silk Fibroin Based on Solid-State NMROuentational Constauunts and Fiber Diffraction Unit CellParameters
¼Ùéáµè§Makoto Demura, Masashi Minami, Tetsuo Asakura, and T. A. Cross
˹éÒ1300

ª×èÍàÃ×èͧDiffusion-Limited Size-Selective Ion Sensing Based onSAM-Supported Peptide Nanotubes
¼Ùéáµè§Kianoush Motesharei, M. Reza Ghadiri
˹éÒ1347

ª×èÍàÃ×èͧPossible Intermediates in Biological Metalloporphyrin OxidativeDegradation. Nickel, Copper, and Cobalt Complexes ofOctaethylformybiliverdin and Their Conversion to a Verdoheme
¼Ùéáµè§Richard Koerner, Marilyn M. Olmstead, Andrzej Ozarowski, Shane L.Phillips, Pamela M. Van Calcar, Krzysztof Winkler, and Alan L.Balch
˹éÒ1274

ª×èÍàÃ×èͧX - ray Absorption Spectroscopy of the Molybdenum Site ofEscherichia coli Formate Dehydrogenase
¼Ùéáµè§Graham N. George, Christopher M. Colangelo, Jun Dong, Robert A.Scott, Sergei V. Khangulov, Vadim N. Gladyshev, and Thressa C.Stadtman
˹éÒ1267

ª×èÍàÃ×èͧUnprecedented Polycrystal Struuctue of a New Cadmium ThiolateContaining an Unusually Highly Charged[ClCd(,8){SCH(CH(,2)CH(,2))(,2)N(H)Me}(,16)]('15)('+) Core
¼Ùéáµè§Pilar Gonzalez - Duarte, William Clegg, Isise Casals, Joan Sola,and Jordi Rius
˹éÒ1260

ª×èÍàÃ×èͧMixed Cations for the Stabilization of New Features. Ca(,6.2)Mg(3.8) Sn(,7), a Phase with Planar Zigzag Chains of InterlinkedSquare - Planar Tin Units
¼Ùéáµè§Ashok K. Ganguli, John D. Corbett, and Martin Kockerling
˹éÒ1223

ª×èÍàÃ×èͧNAD(P)('+)-NAD(P)H Models. 88. Stereoselection without StericEffect but Controlled by Electronic Effect of a Carbonyl Group:Syn/Anti Reactivity Ratio, Kinetic Isotope Effect, and anElectron - Transfer Complex as a Reaction Intermediates
¼Ùéáµè§Atsuyoshi Ohno, Yoshiteru Ishikawa, Norimasa Yamazaki, MutsuoOkamura, and Yasushi Kawai
˹éÒ1186

ª×èÍàÃ×èͧEfficient Zirconocene - Coupling of Silicon - Substituted Diynesto Polymers and Macrocycles
¼Ùéáµè§Shane S. H. Mao, Feng - Quan Liu, and T. Don Tilley
˹éÒ1193

ª×èÍàÃ×èͧFrom Styrenes to Enantiopure (...) - Arylglycines in Two Steps
¼Ùéáµè§K. Laxma Reddy and K. Barry Sharpless
˹éÒ1207

ª×èÍàÃ×èͧCrystal Structures and ab Initio Calculations of New DicationicTelluranes ((...)('4) - Tellane), [10-Te-4(C2X2)('2+) (X = S,Se): Positively Charged Hypervalent Bonding Systems
¼Ùéáµè§Akio Bent Bergholdt, Katsutoshi Kobayashi, Ernst Horn, OhgiTakahashi, Soichi Sato, Naomichi Furukawa, Masataka Yokoyama, andKentaro Yamaguchi
˹éÒ1230

ª×èÍàÃ×èͧDirect Detection of 1,1- Diphenylgermene in Solution and AbsoluteRate Constants for Germene Trapping Reactions
¼Ùéáµè§Nicholas P. Toltl and William J. Leigh
˹éÒ1172

ª×èÍàÃ×èͧSpectroscopic Investigation of the Metal Ligation and Reactivityof the Ferrous Active Sites of Bleomycin and Blomycin Derivatives
¼Ùéáµè§Kelly E. Loeb, Jeffrey M. Zaleski, Cynthia D. Hess, Sidney M.Hecht, and Edward I. Solomon
˹éÒ1249

ª×èÍàÃ×èͧTetrabutylammonium Fluoride Promoted Novel Reactions of O -Caborane: Inter - and Intramolecular Additions to Aldehydes andKetones and Annulation vis Enals and Enones
¼Ùéáµè§Hiroyuki Nakamura, Kouichi Aoyagi, and Yoshinori Yamamoto
˹éÒ1167

ª×èÍàÃ×èͧEscherichia coli (...)-Galactosidase Recognizes a High-EnergyConformation of C-Lactose, a Nonhydrolizable Substrate Analogue.NMR and Modeling Studies of the Molecular Complex
¼Ùéáµè§J. F. Espinosa, E. Montero, A. Vian, J. L. Garcia, H. Dietrich,R. R. Schmidt, M. Martin-Lomas, A. Imberty, F. J. Canada, and J.Jimenez-Barbero
˹éÒ1309

ª×èÍàÃ×èͧHigh-Field Electrophoretic NMR of Protein Mixtures in Solution
¼Ùéáµè§Qiuhong He, Yumin Liu,and Terry Nixon
˹éÒ1341

ª×èÍàÃ×èͧTransition Metal Coordinated Al (X)L(,2) and Ga(X)L(,2) Fragments
¼Ùéáµè§Roland A. Fischer, Markus M. Schulte, Jurij Weiss, LaszloZsolnai, Albrecht Jacobi, Gottried Huttner, Gernot Frenking,Christian Boehme, and Sergei F. Vyboishchikov
˹éÒ1237

ª×èÍàÃ×èͧMarcus Free Energy Dependence of the Sign of ExchangeInteractions in Radical Ion Pairs Generated by PhotoinducedElectron Transfer Reactions
¼Ùéáµè§Shinji Sekiguchi, Yasuhiro Kobori, Kimio Akiyama, ShozoTero-Kubota
˹éÒ1325

ª×èÍàÃ×èͧNanosecond Molecular Dynamics of Hybrid Triplex and Duplex ofPolycation Deoxyribonucleic Guanidine Strands with aComplimentary DNA Strand
¼Ùéáµè§Jia Luo and Thomas C. Bruice
˹éÒ1115

ª×èÍàÃ×èͧMetal Ion Induced Folding of a de Novo Designed Coiled - CoilPeptide
¼Ùéáµè§Wayne D. Kohn, Cyril M. Kay, Brian D. Sykes, and Robert S. Hodges
˹éÒ1124

ª×èÍàÃ×èͧMechanism of Action of Vitamin B(,12). Ultrafast Radical ClocksProvide No Evidence for Radical Intermediates in CyclopropaneModels for the Methylmalonyl - CoA to Succinyl _ CoA CarbonSkeleton Rearrangement
¼Ùéáµè§Mu He and Paul Dowd
˹éÒ1133

ª×èÍàÃ×èͧSolution Structure of (...)(,2)D, a Nativelike de Novo DesignedProtein
¼Ùéáµè§R. Blake Hill and William F. DeGrado
˹éÒ1138

ª×èÍàÃ×èͧStructural and Kinetic Characterization of an Acyl TransferaseRibozyme
¼Ùéáµè§Hiroaki Suga, Peter A. Lohse, and Jack W. Szostak
˹éÒ1151

ª×èÍàÃ×èͧSynthesis and Photochemical Behavior of Peptide Nucleic AcidDimers and Analogues Containing 4- Thiothymine: Unprecedented(5-4) Photoadduct Reversion
¼Ùéáµè§Pascale Clivio, Dominique Guillaume, Marie - Therese Adeline,Jeanine Hamon, Claude Riche, and Jean - Louis Fourrey
˹éÒ1157

ª×èÍàÃ×èͧNew Indicators for Visualizing Pattern Formation in UncatalyzedBromate Oscillatory Systems
¼Ùéáµè§Miklos Orban, Krisztina Kurin - Csorgei, Anatol M. Zhabotinsky,and Irving R. Epstein
˹éÒ1146

ª×èÍàÃ×èͧExcited State Localization or Delocalization in C(,3)-symmetricAmino-substituted Triphenylbenzene Derivatives
¼Ùéáµè§Wouter Verbouwe, Mark Van der Auweraer, Frans C. De Schryver,Jacob J. Piet, John M. Warman
˹éÒ1319

ª×èÍàÃ×èͧControl of Permeation of Lanthanide Ions Across Phosphate -Functionalized Liposomal Membranes
¼Ùéáµè§Paolo Scrimin, Paolo Tecilla, Robert A. Moss, and Kathryn Bracken
˹éÒ1179

ª×èÍàÃ×èͧTotal Synthesis of Nothapodytine B and (-) - Mappicine
¼Ùéáµè§Dale L. Boger and Jiyong Hong
˹éÒ1218

ª×èÍàÃ×èͧPhotoisomerization Path for a Realistic Retinal ChromophoreModel: The Nonatetreniminium Cation
¼Ùéáµè§Marco Garavelli, Thom Vreven, Paolo Celani, Fernando Bernardi,Michael A. Robb, and Massimo Olivucci
˹éÒ1285

ª×èÍàÃ×èͧThe Effect of Mixing-Induced Noise on Second Order Reactions in aCSTR
¼Ùéáµè§Peter Strizhak, Fathei Ali,and Michael Menzinger
˹éÒ1343

ª×èÍàÃ×èͧHydration of Folded and Unfolded Gas-Phase Proteins: Saturationof Cytochrome c and Apomyoglobin
¼Ùéáµè§James L. Fye, Jurgen Woenckhaus, and Martin F. Jarrold
˹éÒ1327

Vol. 120 No.5,11 February 1998
ª×èÍàÃ×èͧModulation of Carbenic Reactivity by (...) - Complexation toAromatics
¼Ùéáµè§Robert A. Moss, Shunqi Yan, and Karsten Krogh - Jespersen
˹éÒ1088

ª×èÍàÃ×èͧAlkene Complexes of Divalent and Trivalent Ruthenium Stabilizedby Chelation. Dependence of Coordinated Alkene Orientation onMetal Oxidation State
¼Ùéáµè§Martin A. Bennett, Graham A. Heath, David C. R. Hockless, IvanKovacik, and Anthony C. Willis
˹éÒ932

ª×èÍàÃ×èͧCleavage of Carbon - Sulfur Bonds of Benzothiophene andDibenzothiophene Mediated by Trinuclear Pentahydride Complex ofRuthenium {n('5)-C(,5)Me(,5))Ru}(,3)(u-H)(,3)(u(,3)-H)(,2)
¼Ùéáµè§Kouki Matsubara, Rei Okamura, Masako Tanaka, and Hiroharu Suzuki
˹éÒ1108

ª×èÍàÃ×èͧA Zwitterionic Zirconocene Alkyl Complex as a Single - Component(...) - Olefin Dimerization Catalyst
¼Ùéáµè§Harry van der Heijden, Bart Hessen, and A. Guy Orpen
˹éÒ1112

ª×èÍàÃ×èͧPersistent High - Spin Polycarbene. Generation of Polybrominated1,3,5 - Tris - [2-[4-(Phenylcarbeno) phenyl] ethynyl] benzene(S=3)and Spin Identification by Two - Dimensional Electron Spin TransientNutation Spectroscopy
¼Ùéáµè§Hideo Tomioka, Makoto Hattori, Katsuyuki Hirai, Kazunobu Sato,Daisuke Shiomi, Takeji Takui, and Koichi Itoh
˹éÒ1106

ª×èÍàÃ×èͧRates of Intramolecular Electron Transfer in Ru(bpy)(,2)(im)(His83) - Modified Azurin Increase below 220 K
¼Ùéáµè§Lars K. Skov, Torbjorn Pascher, Jay R. Winkler, and Harry B. Gray
˹éÒ1102

ª×èÍàÃ×èͧEngineering the Diiron Site of Escherichia coli RibonucleotideReductase Protein R2 to Accumulate an Intermediate Similar toH(,peroxo), the Putative Peroxodiiron (III) Complex from theMethane Monooxygenase Catalytic Cycle
¼Ùéáµè§J. Martin Bollinger, Jr., Carsten Krebs, Armeria Vicol, ShuxianChen, Brenda A. Ley, Dale E. Edmondson, and Boi Hanh Huynh
˹éÒ1094

ª×èÍàÃ×èͧTandem Hetero - Catenation: Templating and Self - Assembly in theMutual Closure of Two Different Interlocking Rings
¼Ùéáµè§Darren G. Hamilton, Neil Feeder, Luca Prodi, Simon J. Teat,William Clegg, and Jeremy K. M. Sanders
˹éÒ1096

ª×èÍàÃ×èͧEnantioselective Enolborination
¼Ùéáµè§Dale E. Ward and Wan - Li Lu
˹éÒ1098

ª×èÍàÃ×èͧConversion of a Metallacyclobutene to Cobalt - Allene Complexes
¼Ùéáµè§Joseph M. O'Connor, Ming - Chou Chen, Bella S. Fong, Anna Wenzel,Peter Gantzel, Arnold L. Rheingold, and Ilia A. Guzei
˹éÒ1100

ª×èÍàÃ×èͧTheoretical Proposal of a Catalytic Mechanism for the HIV-1Protease Involving an Enzyme - Bound Tetrahedral Intermediate
¼Ùéáµè§Alessando Venturini, Fernando Lopez - Ortiz, Julia M. Alvarez,and Javier Gonzalez
˹éÒ1110

ª×èÍàÃ×èͧMechaistic Studies of the Palladium - Catalyzed Copolymerizationof Ethylene and (...) - Olefins with Methyl Acrylate
¼Ùéáµè§Stefan Mecking, Lynda K. Johnson, Lin Wang, and Maurice Brookhart
˹éÒ888

ª×èÍàÃ×èͧBiomimetie Diels - Alder Cyclizations for the Construction of theBrevianamide, Paraherquamide Sclerotamede, and VM55599 RingSystems
¼Ùéáµè§Robert M. Williams, Juan F. Sanz - Cervera, Felix Sancenon, J.Alberto Marco, and Kathleen Halligan
˹éÒ1090

ª×èÍàÃ×èͧSite Valencies and Spin Coupling in the 3Fe and 4Fe (S = 1/2)Clusters of Pyrococcus furiosus Ferredoxin by ('57)Fe ENDOR
¼Ùéáµè§Joshua Telser, Heshu Huang, Hong - In Lee, Michael W. W. Adams,and Brian M. Hoffman
˹éÒ861

ª×èÍàÃ×èͧUnusually Strong Dependence of Conformation on Solvent
¼Ùéáµè§Charles L. Perin, Miles A. Fabian and Ignacio A. Rivero
˹éÒ1044

ª×èÍàÃ×èͧQ- band Electron Nuclear Double Resonance of Ferric Bleomycin andActvated Bleomycin Complexes with DNA: Fe (III) HyperfineInteraction with ('13)P and DNA- Induced Perturbation toBleomycin Structure
¼Ùéáµè§Andrei Veselov, Richard M. Burger, and Charles P. Scholes
˹éÒ1030

ª×èÍàÃ×èͧCatalytic Enantiselective Reductive Amination in a Host - GuestSystem Based on a Protein Cavity
¼Ùéáµè§Hao Kuang and Mark D. Distefano
˹éÒ1072

ª×èÍàÃ×èͧRaman Signature of the Fe(,2)O(,2) 'Diamond' Core
¼Ùéáµè§Elizabeth C. Wilkinson, Yanhong Dong, Yan Zang, Hiroshi Fujii,Robert Fraczkiewicz, Grazyna Fraczkiewicz, Roman S.Czernuszewicz, and Lawrence Qne, Jr.
˹éÒ955

ª×èÍàÃ×èͧSynthesis and Dynamic Properties of Cycloheptatrienyl (dipropyl)borane. Equilibrium with 7- Dipropylborylnocaradiene
¼Ùéáµè§Ilya D. Gridnev, Oleg L. Tok, Natalya A. Gridneva, Yuri N.Bubnov, and Peter R. Schreiner
˹éÒ1034

ª×èÍàÃ×èͧDeciphering the Cryptoregiochemistry of Oleate (...)('12)Desaturase: A Kinetic Isotope Effect Study
¼Ùéáµè§Peter H. Buist and Behnaz Behrouzian
˹éÒ871

ª×èÍàÃ×èͧAre Both the (R) - and the (S) - MPA Esters Really Needed for theAssignment of the Absolute Configuration of Secondary Alcohols byNMR? The Use of a Single Derivative
¼Ùéáµè§Shamil K. Latypov, Jose M. Seco, Emilio Quinoa, and RicardoRiguera
˹éÒ877

ª×èÍàÃ×èͧPolymer Concentration - Controlled Substrate Specificity inSolvolysis of p - Nitrophenyl Alkanoates Catalyzed by 4 -(Dialkylamino) pyridine - Functionalized Polymer in AqueousMethanol Solution
¼Ùéáµè§Guang - Jia Wang and Wilmer K. Fife
˹éÒ883

ª×èÍàÃ×èͧThe Mechanistic Basis for ELectronic Effects on Enantioselectivityin the (salen) Mn (III) - Catalyzed Epoxidation Reaction
¼Ùéáµè§Michael Palucki, Nathaniel S. Finney, Paul J. Pospisil, Mehmet L.Giiler, Toyohisa Ishida, and Eric N. Jacobsen
˹éÒ948

ª×èÍàÃ×èͧElectronic Structure and Molecular Conformation in the ExcitedCharge Transfer Singlet States of 9- Acridyl and Other ArylDerivatives of Aromatic Amines
¼Ùéáµè§Jerzy Herbich and Andrzej Kapturkiewicz
˹éÒ1014

ª×èÍàÃ×èͧHow Electrophilic Are Cobalt Carbonyl Stabilized PropargyliumIons?
¼Ùéáµè§Oliver Kuhn, Doris Rau, and Herbert Mayr
˹éÒ900

ª×èÍàÃ×èͧPrimer Unit Specificity in Rifamycin Biosynthesis PrincipallyResides in the Later Stages of the Biosynthetic Pathway
¼Ùéáµè§Daniel Hunziker, Tin - Wein Yu, C. Richard Hutchinson, Heinz G.Floss, and Chaitan Khosla
˹éÒ1092

ª×èÍàÃ×èͧConstitutionally Asymmetric and Chiral [2] Pseudorotaxanes
¼Ùéáµè§Masumi Asakawa, Peter R. Ashton, Wayne Hayes, Henk M. Janssen, E.W. Meijer, Stephan Menzer Dario Pasini, J. Fraser Stoddart,Andrew J. P. White, and David J. Williams
˹éÒ920

ª×èÍàÃ×èͧDensity Functional Calculations of 19 - Electron OrganometallicMolecules. A Comparison of Calculated and Observed AnisotropicHyperfine Coupling Constants for the CpCo(CO)(,2)('-) Anion.Implications for Determining Orbital Spin Populations from EPRData
¼Ùéáµè§Dale A. Braden and David R. Tyler
˹éÒ942

ª×èÍàÃ×èͧEXAFS Characterization of the Intermediate X Generated During theAssembly fo the Escherichia coli Ribonucleotide Reductase R2Diferric Tyrosyl Radical Cofactor
¼Ùéáµè§Pamela J. Riggs - Gelasco, Lijin Shu, Shuxian Chen, Doug Burdi,Boi Hanh Huynh, Lawrence Qne, Jr., and JoAnne Stubbe
˹éÒ849

ª×èÍàÃ×èͧ[3],(,6)(1,2,3,4,5,6) Cyclophane - A Molecular Pinwheel and ItsCorrelated Inversion: NMR and Energetic Considerations
¼Ùéáµè§Holger F. Bettinger, Paul v. R. Schleyer, and Henry F. SchaeferIII
˹éÒ1074

ª×èÍàÃ×èͧOxygen - Rich Oxidase Enzyme Electrodes for Operation in Oxygen -Free Solutions
¼Ùéáµè§Joseph Wang and Fang Lu
˹éÒ1048

ª×èÍàÃ×èͧA Novel Mode of Inclusion for Pyrene in (...) - CyclodextrinCompounds: The Crystal Structures of (...) - Cyclodextrin withCyclohexanol and Pyrene, and with n- Octanol and Pyrene
¼Ùéáµè§Konstantin A. Udachin and John A. Ripmeester
˹éÒ1080

ª×èÍàÃ×èͧREAPDOR NMR Spectroscopy and Location of Cations in MolecularSieves
¼Ùéáµè§S. Ganapathy and S. Vega
˹éÒ1078

ª×èÍàÃ×èͧSolid - Liquid Electron Density Transfer in Aqueous CharSuspensions by ('1) H- Pulsed Dynamic Nuclear Polarization at LowMagnetic Field
¼Ùéáµè§B. M. Odintsov, R. L. Belford, P. J. Ceroke, and R. B. Clarkson
˹éÒ1076

ª×èÍàÃ×èͧElectrochemical Measurement of the Free Energy of Adsorption ofn- Alkanethiolates at Ag(111)
¼Ùéáµè§David W. Hatchett, Rory H. Uibel, Keith J. Stevenson, Joel M.Harris, and Henry S. White
˹éÒ1062

ª×èÍàÃ×èͧCo - and Counterrotation of Magnetic Axes and Axial Ligands inLow - Spin Ferriheme Systems
¼Ùéáµè§Nikolai V. Shokhirev and F. Ann Walker
˹éÒ991

ª×èÍàÃ×èͧHow Long Can You Make an Oxygen Chain?
¼Ùéáµè§Daniel J. Mckay and James S. Wright
˹éÒ1003

ª×èÍàÃ×èͧQuantitative Description of the Facial Discrimination ofMolecules Containing a Prochiral Group by NMR in a Chiral LiquidCrystal
¼Ùéáµè§D. Merlet, A. Loewenstein, W. Smadja, J. Courtieu, and P. Lesot
˹éÒ963

ª×èÍàÃ×èͧA 1- and 2- D ('19)F MAS NMR Study of Fluoride - Ion Mobility ina (...) PbF(,2)
¼Ùéáµè§Francis Wang and Clare P. Grey
˹éÒ970

ª×èÍàÃ×èͧSynthesis of Branched Polyolefins Using a Combination ofHomogeneous Metallocene Mimics
¼Ùéáµè§Richard W. Barnhart, Guillermo C. Bazan, and Thomas Mourey
˹éÒ1082

ª×èÍàÃ×èͧPhotodegradation of Polysilane Polymers by Nonresonant Two -Photon Excitation
¼Ùéáµè§Takashi Miyazawa, Titao Saeki, Chengyou Liu, and Mitsuo Kira
˹éÒ1084

ª×èÍàÃ×èͧComplex of Dinitrogen with Trivalent Uranium
¼Ùéáµè§Paul Roussel and Peter Scott
˹éÒ1070

ª×èÍàÃ×èͧAsymmetric Activation of Racemic Ruthenium (II) Complexes forEnantioselective Hydrogenation
¼Ùéáµè§Takeshi Ohkuma, Henri Doucet, Trang Pham, Koichi Mikami,Toshinobu Korenaga, Masahiro Terada, and Ryoji Noyori
˹éÒ1086

ª×èÍàÃ×èͧAb Initio Calcutions of the Electron - Transfer Matrix Element inCu(I) - Cu(II) Mixed - Valence Compounds
¼Ùéáµè§Carmen Jimenez Calzado and Javier Fernandez Sanz
˹éÒ1051

ª×èÍàÃ×èͧCatalytic Asymmetric Syntheses of Antifungal Sphingofungins andTheir Biological Activity as Potent Inhibitors of SerinePalmitoyltransferase(SPT)
¼Ùéáµè§Shu Kobayashi, Takayuki Furuta, Takaomi Hayashi, MasahiroNishijima, and Kentaro Hanada
˹éÒ908

Vol. 120 No.40,14 October 1998
ª×èÍàÃ×èͧNanocavities with Fine Adjustment in Channel-Type InclusionCrystals of Alkylammonium Deoxycholates. Control of MolecularCavities by Partial Filling of Molecular Channels
¼Ùéáµè§Kazuki Sada, Naotaka Shiomi, and Mikiji Miyata
˹éÒ10543

ª×èÍàÃ×èͧUsing Amide ('1)H and ('15)N Transverse Relaxation To DetectMillisecond Time-Scale Motions in Perdeuterated Proteins:Application to HIV-1 Protease
¼Ùéáµè§Rieko Ishima, Paul T. Wingfield, Stephen J. Stahl, Joshua D.Kaufman, and Dennis A. Torchia
˹éÒ10534

ª×èÍàÃ×èͧThe Nature of the Transition Structure for the Oxidation ofAlkanes with Dioxiranes
¼Ùéáµè§Mikhail N. Glukhovtsev, Carlo Canepa, and Robert D. Bach
˹éÒ10528

ª×èÍàÃ×èͧA Model for Protonation of Dinitrogen by Nitrogenase: Protonationof Coordinated Dinitrogen on Tungsten with Hydrosulfido-BridgedDinuclear Complexes
¼Ùéáµè§Yoshiaki Nishibayashi, Shotaro Iwai, and Masanobu Hidai
˹éÒ10559

ª×èÍàÃ×èͧSolvent Effects on Carbocation-Nucleophile Combination Reactions:A Comparison of (...)-Nucleophilicity in Aqueous and OrganicSolvents
¼Ùéáµè§John P. Richard, Paul Szymanski, and Kathleen B. Williams
˹éÒ10372

ª×èÍàÃ×èͧSelective Population from the Excited Multiplet States to theTriplet Ground State in a Phthalocyanine: A New Concept forControlling Magnetic Properties by Photoexcitation
¼Ùéáµè§Kazuyuki Ishii, Yoshiharu Hirose, and Nagao Kobayashi
˹éÒ10551

ª×èÍàÃ×èͧTheoretical and Solid-State NMR Study of Acetylene Adsorption onNano-Sized MgO
¼Ùéáµè§John B. Nicholas, Ali A. Kheir, Teng Xu, Thomas R. Krawietz, andJames F. Haw
˹éÒ10471

ª×èÍàÃ×èͧEvidence for Rare Gas Endohedral Fullerene Formation from (...)Recoil from HPLC Studies
¼Ùéáµè§G.E. Gadd, P. Schmidt, C. Bowles, G. McOrist, P.J. Evans, J.Wood, L. Smith, A. Dixon, and J. Easey
˹éÒ10322

ª×èÍàÃ×èͧA Short but Weak Cu-Cu Interaction in [Cu(,2)Br(,5)]('2-), aCrystal Engineered (Cu('1.5+))(,2) Confacial BitetrahedralComplex
¼Ùéáµè§Caitlin Horn, Ian Dance, Don Craig, Marcia Scudder, and GrahamBowmaker
˹éÒ10549

ª×èÍàÃ×èͧSecond Hydration Shell Single Scattering versus First HydrationShell Multiple Scattering in M(H(,2)O)(,6)('3+) EXAFS Spectra
¼Ùéáµè§Hideto Sakane, Adela Munoz-Paez, Sofia Diaz-Moreno, Jose M.Martinez, Rafael R. Pappalardo, and Enrique Sanchez Marcos
˹éÒ10397

ª×èÍàÃ×èͧSynthesis of ((,-)('+))-Calicheamicinone by Two Methods
¼Ùéáµè§Derrick L.J. Clive, Yunxin Bo, Yong Tao, Sylvain Daigneault,Yong-Jin Wu, and Gerard Meignan
˹éÒ10332

ª×èÍàÃ×èͧSynthesis of Vanillin from Glucose
¼Ùéáµè§Kai Li and J.W. Frost
˹éÒ10545

ª×èÍàÃ×èͧObservation of the Anti Conformation of a Glycosidic Linkage inan Antibody-Bound Oligosaccharide
¼Ùéáµè§Mark J. Milton and David R. Bundle
˹éÒ10547

ª×èÍàÃ×èͧCalculated pK(,Enol) Values for Enols of Carboxylic AcidDerivatives HC=C(OH)X (X=OH, NH(,2), NMe(,2), OMe, OCHO, F, Cl,Br)
¼Ùéáµè§Stepan Sklenak, Yitzhak Apeloig, and Zvi Rappoport
˹éÒ10359

ª×èÍàÃ×èͧAddition of Methyl Grignard Reagents to Germasilenes andDigermenes: Unusual Ligand Exchange Reaction of the ResultingGermyl Grignard
¼Ùéáµè§Craig E. Dixon, Matthew R. Netherton, and Kim M. Baines
˹éÒ10365

ª×èÍàÃ×èͧKinetics of Cyclopropylcarbinyl Radical Ring Openings MeasuredDirectly by Laser Flash Photolysis
¼Ùéáµè§John H. Horner, Noriko Tanaka, and Martin Newcomb
˹éÒ10379

ª×èÍàÃ×èͧNovel (...)('3)-Allylpalladium-Pyridinylpyrazole Complex:Synthesis, Reativity, and Catalytic Activity for Cyclopropanationof Ketene Sily Acetal with Allylic Acetates
¼Ùéáµè§Akiharu Satake and Tadashi Nakata
˹éÒ10391

ª×èÍàÃ×èͧChemical Shift Anisotropy as a Mechanism for Modulating ApparentJ(,Tl-H) and J(,Tl-C) Coupling Constants inTris(pyrazolyl)hydroborato Thallium Complexes
¼Ùéáµè§Prasenjit Ghosh, Peter J. Desrosiers, and Gerard Parkin
˹éÒ10416

ª×èÍàÃ×èͧCompetition between Rotamerization and Proton Transfer ino-Hydroxybenzaldehyde
¼Ùéáµè§Martin Cuma, Steve Scheiner, and Tapas Kar
˹éÒ10497

ª×èÍàÃ×èͧHybridization as a Metric for the Reaction Coordinate of ChemicalReactions
¼Ùéáµè§R.C. Haddon and S.-Y. Chow
˹éÒ10494

ª×èÍàÃ×èͧ[5,5] Sigmatropic Rearrangement. DFT Prediction of a DiradicalMechanism for a Woodward-Hoffmann 'Allowed' Thermal PericyclicReaction
¼Ùéáµè§Brett R. Beno, Jens Fennen, K.N. Houk, Hans Jorg Lindner, andKlaus Hafner
˹éÒ10490

ª×èÍàÃ×èͧCarbocation-(...) Interaction: Computational Study ofComplexation of Methyl Cation with Benzene and Comparisons withRelated Systems
¼Ùéáµè§Paul C. Miklis, Robert Ditchfield, and Thomas A. Spencer
˹éÒ10482

ª×èÍàÃ×èͧEffect of Protonation-Deprotonation Processes on theElectrooptical Properties of Bipyridine-ContainingPoly(p-phenylene-vinylene) Derivatives
¼Ùéáµè§Yoav Eichen, Gregory Nakhmanovich, Vladimir Gorelik, OlgaEpshtein, Jorge M. Poplawski, and Eitan Ehrenfreund
˹éÒ10463

ª×èÍàÃ×èͧ('13)C-('13)C Correlations and Internuclear Distance Measurementswith 2D-MELODRAMA
¼Ùéáµè§Harold C. Jarrell, Dalian Lu, and David J. Siminovitch
˹éÒ10453

ª×èÍàÃ×èͧStepwise Disintegration of the Photosynthetic Oxygen-EvolvingComplex
¼Ùéáµè§Cecilia Tommos, John McCracken, Stenbjorn Styring, and Gerald T.Babcock
˹éÒ10441

ª×èÍàÃ×èͧGas-Phase Negative Ion Chemistry of Lewis Acid-Base Complexes
¼Ùéáµè§Jianhua Ren, Derek B. Workman, and Robert R. Squires
˹éÒ10511

ª×èÍàÃ×èͧThe Very Low Barrier of CO Site Exchange inTricarbonyl((...)('4)-1,5-cyclooctadiene)iron: PicosecondKinetics in Solution Investigated by Line Shape Simulation of the(...)(CO) IR Bands and Complementary Evidence from the Course of('13)CO Incorporation in a
¼Ùéáµè§Friedrich-Wilhelm Grevels, Klaus Kerpen, Werner E. Klotzbucher,R.E.D. McClung, Graham Russell, Manuella Viotte, and KurtSchaffner
˹éÒ10423

ª×èÍàÃ×èͧActivation of O(,2) on a Photochemically Generated Rh('I) Site onan Al(,2)O(,3) Surface: Low-Temperature O(,2) Dissociation and COOxidation
¼Ùéáµè§Edward A. Wovchko and John T. Yates, Jr.
˹éÒ10523

ª×èÍàÃ×èͧLigand-Induced Ring Slippage of (...)('6)-to(...)('4)-Naphthalene. Preparation and StructuralCharacterization ofRu((...)('4)-C(,10)H(,8))((...)(,4)-1,5-C(,8)H(,12))(L)[L=PMe(,3), PEt(,3), P(OMe)(,3)] and of Derived BinuclearComplexes Containing Bridging N
¼Ùéáµè§Martin A. Bennett, Zhaobin Lu, Xianqi Wang, Mark Bown, and DavidC.R. Hockless
˹éÒ10409

ª×èÍàÃ×èͧSynthesis of the Antitumor Agent Aglycon((,-)('+))-Calicheamicinone Using an 0-Quinone Monoketal Strategy
¼Ùéáµè§Ian Churcher, David Hallett, and Philip Magnus
˹éÒ10350

ª×èÍàÃ×èͧGround- and Excited-State Mapping of Plastocyanin from ResonanceRaman Spectra of Isotope-Labeled Proteins
¼Ùéáµè§Shoulian Dong and Thomas G. Spiro
˹éÒ10434

ª×èÍàÃ×èͧA (...)-Peptide Reverse Turn that Promotes Hairpin Formation
¼Ùéáµè§Yong Jun Chung, Laurie A. Christianson, Heather E. Stanger,Douglas R. Powell, and Samuel H. Gellman
˹éÒ10555

ª×èÍàÃ×èͧCircularly Polarized Luminescence from Chiral OctadentateComplexes of Yb(III) in the Near-Infrared
¼Ùéáµè§Christine L. Maupin, David Parker, J.A. Gareth Williams, andJames P. Riehl
˹éÒ10563

ª×èÍàÃ×èͧNucleic Acid Interactions of Unfused Aromatic Cations: Evaluationof Proposed Minor-Groove, Major-Groove, and Intercalation BindingModes
¼Ùéáµè§W. David Wilson, Farial A. Tanious, Daoyuan Ding, Arvind Kumar,David W. Boykin, Pierre Colson, Claude Houssier, and ChristianBailly
˹éÒ10310

ª×èÍàÃ×èͧNew Insights into Horseradish Peroxidase Function in Benzene fromResonance Raman Spectroscopy
¼Ùéáµè§Patricia Ann Mabrouk and Thomas G. Spiro
˹éÒ10303

ª×èÍàÃ×èͧCharacterization of the Fundamental Protein Ligand Requirementsof [4Fe-4S]('2+/+) Clusters with Sixteen Amino Acid Maquettes
¼Ùéáµè§Stephen E. Mulholland, Brian R. Gibney, Francesc Rabanal, and P.Leslie Dutton
˹éÒ10296

ª×èÍàÃ×èͧSubstrate Recognition and Saturation Kinetics in de Novo DesignedHistidine-Based Four-Helix Bundle Catalysts
¼Ùéáµè§Kerstin S. Broo, Helena Nilsson, Jonas Nilsson, and Lars Baltzer
˹éÒ10287

ª×èÍàÃ×èͧThe Role of Aggregates in Claisen Acylation Reactions of TwoLithium Enolates in THF
¼Ùéáµè§Simon Shun-Wang Leung and Andrew Streitwieser
˹éÒ10557

ª×èÍàÃ×èͧMacrocyclization of Fischer Carbene Complexes as an Approach toCyclophanes
¼Ùéáµè§Huan Wang and William D. Wulff
˹éÒ10573

ª×èÍàÃ×èͧCharacterization and Chemical Stability of PhotooxidizedOligonucleotides that Contain2,2-Diamino-4-[(2-deoxy-(...)-D-erythro-pentofuranosyl)amino]-5(2H)-oxazolone
¼Ùéáµè§Didier Gasparutto, Jean-Luc Ravanat, Olivier Gerot, and JeanCadet
˹éÒ10283

ª×èÍàÃ×èͧAn Ab Initio Nuclear Magnetic Resonance and Atoms-in-MoleculesStudy of the PO Bond in Phosphine Oxides
¼Ùéáµè§D.B. Chesnut
˹éÒ10504

ª×èÍàÃ×èͧThe Synthesis, Structure, and Reactivity of PhenylTris(3-tert-butylpyrazolyl)borato Iron Methyl,[PhTp('Bu('t))]FeMe: Isolation of a Four-Coordinate MonovalentIron Carbonyl Complex, [PhTp('Bu('t))]FeCO
¼Ùéáµè§Jennifer L. Kisko, Tony Hascall, and Gerard Parkin
˹éÒ10561

ª×èÍàÃ×èͧSaturation of Magnetic Field Effects Due to the (...)g Mechanismunder Ultrahigh Fields of up to 28 T
¼Ùéáµè§Masanobu Wakasa, Kiyoshi Nishizawa, Haruo Abe, Giyuu Kido, andHisaharu Hayashi
˹éÒ10565

ª×èÍàÃ×èͧBromoketone C-Glycosides, a New Class of (...)-GlucanaseInactivators
¼Ùéáµè§Steven Howard and Stephen G. Withers
˹éÒ10326

ª×èÍàÃ×èͧFirst Synthesis and Structural Characterization of DinuclearM(III) Bis((...)-oxo) Complexes of Nickel and Cobalt withHydrotris(pyrazolyl)borate Ligand
¼Ùéáµè§Shiro Hikichi, Michito Yoshizawa, Yasuyuki Sasakura, MunetakaAkita, and Yoshihiko Moro-oka
˹éÒ10567

ª×èÍàÃ×èͧTransformation of Germanium Dioxide to Microporous Germanate4-Connected Nets
¼Ùéáµè§Hailian Li and O.M. Yaghi
˹éÒ10569

ª×èÍàÃ×èͧMeasurement of Residual Dipolar Couplings of MacromoleculesAligned in the Nematic Phase of a Colloidal Suspension ofRod-Shaped Viruses
¼Ùéáµè§G. Marius Clore, Mary R. Starich, and Angela M. Gronenborn
˹éÒ10571

ª×èÍàÃ×èͧEnzymatic Ligation Reactions of DNA 'Words' on Surfaces for DNAComputing
¼Ùéáµè§Anthony G. Frutos, Lloyd M. Smith, and Robert M. Corn
˹éÒ10277

ª×èÍàÃ×èͧExperimental Investigations and ab Initio Studies onHexacoordinated Complexes of Dichlorosilane
¼Ùéáµè§Karl Hensen, Thorsten Stumpf, Michael Bolte, Christian Nather,and Holger Fleischer
˹éÒ10402

Vol. 120 No.4,4 February 1998
ª×èÍàÃ×èͧOxidation of Alkenes, Sulfides, Amines, and Phosphineswith Peroxynitrous Acid: Comparison with Other Oxidants Such asPeroxyformic Acid and Dimethyldioxirane
¼Ùéáµè§Robert D. Bach, Mikhail N. Glukhovtsev, and Carlo Canepa
˹éÒ775

ª×èÍàÃ×èͧBiomimetic Aerobic Polymerization of Vinyl Monomers
¼Ùéáµè§J. Jayaseharan and K. Kishore
˹éÒ825

ª×èÍàÃ×èͧOne-Electron Reduction of Aromatic Ketones by Low-ValentLanthanides. Isolation, Stuctural Characterizations, andReactivity of Lanthanide Ketyl Complexes
¼Ùéáµè§Zhaomin Hou, Akira Fujita, Yugen Zhang, Takanori Miyano, HiroshiYamazaki, and Yasuo Wakatsuki
˹éÒ754

ª×èÍàÃ×èͧStructural Changes of Surface Layer of Vanadyl PyrophosphateCatalysts by Oxidation-Reduction and Their Realtionships withSelective Oxidation of n-Butane
¼Ùéáµè§Gaku Koyano, Toshio Okuhara, and Makoto Misono
˹éÒ767

ª×èÍàÃ×èͧAntibody Catalyzed Cleavage of an Amide Bond Using an ExternalNucleophilic Cofactor
¼Ùéáµè§Oguz Ersoy, Roman Fleck, Anthony Sinskey, and Satoru Masamune
˹éÒ817

ª×èÍàÃ×èͧAsymmetric O- and C- Alkylation of Phenols
¼Ùéáµè§Barry M. Trost and F. Dean Toste
˹éÒ815

ª×èÍàÃ×èͧConceptually New Directed Aldol Condensation Using Aluminum Tris(2,6- diphenylphenoxide)
¼Ùéáµè§Susumu Saito, Masahito Shiozawa, Masahiro Ito, and HisashiYamamoto
˹éÒ813

ª×èÍàÃ×èͧApparent Catalytic Generation of Chiral Metal Enolates:Enantioselective Dienolate Additions to Aldehydes Mediated byTol-BINAP Cu(II) Fluoride Complexes
¼Ùéáµè§Jochen Kruger and Erick M. Carreira
˹éÒ837

ª×èÍàÃ×èͧDetemination of the Stable Microstates of a Peptide from NOEDistance Constraints and Optimization of Atomic SolvationParameters
¼Ùéáµè§Canan Baysal and Hagai Meirovitch
˹éÒ800

ª×èÍàÃ×èͧ('129) Xe and ('1)H NMR Study of the Reversible Trapping of Xenonby Cryptophane - A in Organic Solution
¼Ùéáµè§Kristin Bartik, Michel Luhmer, Jean - Pierre Dutasta, Andre Collet,and Jacques Risse
˹éÒ784

ª×èÍàÃ×èͧPalladium - Catalyzed C - N (sp('2)) Bond Formation: N -Arylation of Aromatic and Unsaturated Nitrogen and the ReductiveElimination Chemistry of Palladium Azolyl and MethyleneamidoComplexes
¼Ùéáµè§Grace Mann, John F. Hartwig, Michael S. Driver, and CarolinaFernandez - Rivas
˹éÒ827

ª×èÍàÃ×èͧHindered Rotation in Diphenylmethane Derivatives. Electrostaticvs Charge-Transfer and Homoconjugative Aryl-Aryl Interactions
¼Ùéáµè§A. Garcia Martinez, J. Osio Barcina, A. de Fresno Cerezo, andR. Gutierrez Rivas
˹éÒ673

ª×èÍàÃ×èͧDivergent Pathways in the Rearrangement of Tricyclo[3.3.0.0('2,4)] octanes (Housanes) on Chemical Electron Transfer(CET) versus Acid Catalysis: A Comparison of Radical Cations andCarbocations
¼Ùéáµè§Waldemar Adam, Vera - Iris Handmann, Fumio Kita, and ThomasHeidenfelder
˹éÒ831

ª×èÍàÃ×èͧHighly Regio- and Enantioselective Catalytic Hydrogenation ofEnamides in Conjugated Diene Systems: Synthesis and Applicationof (...),(...)-Unsaturated Amino Acids
¼Ùéáµè§Mark J. Burk, John G. Allen, and William F. Kiesman
˹éÒ657

ª×èÍàÃ×èͧLiving CO/Olefin Alternating Copolymerizations of Electron-PoorBicyclic Olefins Initiated by Neutral Palladium(II) AlkylComplexes: A Route to the Perfectly Alternating Copolymer of Coand Acetylene
¼Ùéáµè§Adam L. Safir and Bruce M. Novak
˹éÒ643

ª×èÍàÃ×èͧOxidation of DNA and RNA by Oxoruthenium (IV)Metallointercalators: Visualizing the Recognition Properties ofDipyridophenazine by High-Resolution Electrophoresis
¼Ùéáµè§Pamela J. Carter, Chien - Chung, and H. Holden Thorp
˹éÒ632

ª×èÍàÃ×èͧMolecular Dynamics of Duplex Systems Involving PNA: Structuraland Dynamical Consequences of the Nucleic Acid Backbone
¼Ùéáµè§Srikanta Sen and Lennart Nilsson
˹éÒ619

ª×èÍàÃ×èͧ('5)N NMR of RNA Fragments Containing Specifically Labeled GU andGC Pairs
¼Ùéáµè§Xiaohu Zhang, Barbara L. Gaffney, and Roger A. Jones
˹éÒ615

ª×èÍàÃ×èͧOn the Origin of Substrate Directing Effects in the Epoxidation ofAllyl Alcohols with Peroxyformic Acid
¼Ùéáµè§Robert D. Bach, Carlos M. Estevez, Julia E. Winter, and MikhailN. Glukhovtsev
˹éÒ680

ª×èÍàÃ×èͧStuctural Rules Governing Self- Assembly Emerge from NewMolecular Capsules
¼Ùéáµè§Jose M. Rivera, Tomas Martin, and Julius Rebek, Jr.
˹éÒ819

ª×èÍàÃ×èͧThe First Crystallographically Characterized Transition MetalBuckybowl Compound: C(,30) H(,12) Carbon - Carbon Bond Activationby Pt (PPh(,3))(,2)
¼Ùéáµè§Raef M. Shaltout, Renata Sygula, Andrzej Sygula, Frank R.Fronczek, George G. Stanley, and Peter W. Rabideau
˹éÒ835

ª×èÍàÃ×èͧSpontaneous Hydrolysis of Ionized Phosphate Monoesters andDiesters and the Proficiencies of Phosphatases andPhosphodiesterases as Catalysts
¼Ùéáµè§Richard Wolfenden, Caroline Ridgway, and Gregory Young
˹éÒ833

ª×èÍàÃ×èͧEthylene Rearrangements to M - C, M = C, and M (...) CFunctionalities over a Tungsten - Oxo Surface Illustrated by theW (IV) Calix [4] arene Fragment
¼Ùéáµè§Luca Giannini, Euro Solari, Carlo Floriani, Angiola Chiesi -Villa, and Corrado Rizzoli
˹éÒ823

ª×èÍàÃ×èͧKinetic Addition of Nucleophiles to n('3)-Propargyl RheniumComplexes Occurs at the Central Carbon to ProduceRhenacyclobutenes
¼Ùéáµè§Charles P. Casey, John R. Nash, Chae S. Yi, Anthony D. Selmeczy,Steven Chung Douglas R. Powell, and Randy K. Hayashi
˹éÒ722

ª×èÍàÃ×èͧHighly Controlled Chemoselectivity of Tin Enolate by ItsHybridization State. Anionic Complex of Tin Enolate Coordinatedby Tetrabutylammonium Bromide as Halo Selective Reagent
¼Ùéáµè§Makoto Yasuda, Keiko Hayashi, Yasuhiro Katoh, Ikuya Shibata, andAkio Baba
˹éÒ715

ª×èÍàÃ×èͧSelf-Assembling Cyclic (...)('3)-Peptide Nanotubes asArtificial Transmembrane Ion Channels
¼Ùéáµè§Thomas D. Clark, Lukas K. Buehler, and M. Reza Ghadiri
˹éÒ651

ª×èÍàÃ×èͧTemplate Synthesis of Near-Monodisperse Microscale Nanofibersand Nanotubules of MoS(,2)
¼Ùéáµè§Catherine M. Zelenski and Peter K. Dorhout
˹éÒ734

ª×èÍàÃ×èͧCircular Dichroism and Magnetic Circular Dichroism SpectroscopicStudies of the Non-Heme Ferrous Active Site in ClavaminateSynthase and Its Interaction with (...)-KetoglutarateCosubstrate
¼Ùéáµè§Elizabeth G. Pavel, Jing Zhou, Robert W. Busby, Michele Gunsior,Craig A. Townsend, and Edward I. Solomon
˹éÒ743

ª×èÍàÃ×èͧSynthesis, Morphology, and Field-Effect Mobility ofAnthradithiophenes
¼Ùéáµè§Joyce G. Laquindanum, Howard E. Katz, and Andrew J. Lovinger
˹éÒ664

ª×èÍàÃ×èͧHalf-Integer-Spin Small Molecule Magnet Exhibiting ResonantMagnetization Tunneling
¼Ùéáµè§Sheila M. J. Aubin, Neil R. Dilley, Michael W. Wemple, M. BrianMaple, George Christou, and David N. Hendrickson
˹éÒ839

ª×èÍàÃ×èͧStereoselectivity of the Thia-Sommelet [2,3]-Dearomatization
¼Ùéáµè§Richard Berger, Joseph W. Ziller, and David L. Van Vranken
˹éÒ841

ª×èÍàÃ×èͧSynthesis of Optically Active (...)-Hydroxy Carbonyl Compoundsby the Catalytic, Enantioselective Oxidation of Silyl EnolEthers and Ketene Acetals with (Salen) manganese (III) Complexes
¼Ùéáµè§Waldemar Adam, Rainer T. Fell, Veit R. Stegmann, and Chantu R.Saha-Moller
˹éÒ708

ª×èÍàÃ×èͧEffect of Guanine Stacking on the Oxidation of 8 - Oxoguanine inB - DNA
¼Ùéáµè§Ferran Prat, K. N. Houk, and Christopher S. Foote
˹éÒ845

ª×èÍàÃ×èͧInterphylal Product Splicing: The First Total Syntheses ofCephalalostatin 1, the Noth Hemisphere of Ritterazine G, and theHighly Active Hybrid Analogue, Ritterostatin G(,n)1(,n)
¼Ùéáµè§Thomas G. LaCour, Chuangxing Guo, Sudhakar Bhandaru, Michael R.Boyd, and P. L. Fuchs
˹éÒ692

ª×èÍàÃ×èͧPhotosensitization of TiO (,2) by [Fe('II)(2,2'- bipyridine -4,4'- dicarboxylic acid)(,2)(CN)(,2)]: Band Selective ElectronInjection from Ultra - Short - Lived Excited States
¼Ùéáµè§Suzanne Ferrere and Brian A. Gregg
˹éÒ843

ª×èÍàÃ×èͧMeasurement of Deoxyribose ('3)('J)(,HH) Scalar Couplings RevealsProtein Binding -Induced Changes in the Sugar Puckers of the DHA
¼Ùéáµè§Thomas Szyperski, Cesar Fernandez, A kira Ono, MasatsuneKainosho, and Kurt Wuithrich
˹éÒ821

ª×èÍàÃ×èͧMolecular Configuration at the Solid-Solid Interface: Twinningin Saccharin Crystals
¼Ùéáµè§H. F. Lieberman, L. Williams, R. J. Davey, and R. G. Pritchard
˹éÒ686

ª×èÍàÃ×èͧPropensity for Helix Formation in the Hydrophobic Peptides K(,2)(LA)(,x) (x=6, 8, 10, 12) in Monolayer, Bulk, and Lipid -Containing Phases. Infrared and Circular Dichroism Studies
¼Ùéáµè§Darline Dieudonne, Arne Gericke, Carol R. Flach, Xin Jiang, RamyS. Farid, and Richard Mendelsohn
˹éÒ792

Vol. 120 No.39,7 October 1998
ª×èÍàÃ×èͧNucleophilic Catalysis with (...)-Bound Nitrogen Heterocycles:Synthesis of the First Ruthenium Catalysts and Comparison of theReactivity and the Enantioselectivity of Ruthenium and IronComplexes
¼Ùéáµè§Christine E. Garrett and Gregory C. Fu
˹éÒ10276

ª×èÍàÃ×èͧDesign, Synthesis, and Photodynamics of Light-Harvesting ArraysComprised of a Porphyrin and One, Two, or Eight Boron-DipyrrinAccessory Pigments
¼Ùéáµè§Feirong Li, Sung Ik Yang, Yangzhen Ciringh, Jyoti Seth, CharlesH. Martin, III, Deepak L. Singh, Dongho Kim, Robert R. Birge,David F. Bocian, Dewey Holten, and Jonathan S. Lindsey
˹éÒ10001

ª×èÍàÃ×èͧDendrimers Containing Chiral Ferrocenyl Diphosphine Ligands forAsymmetric Catalysis
¼Ùéáµè§Christoph Kollner, Benoit Pugin, and Antonio Togni
˹éÒ10274

ª×èÍàÃ×èͧResponses of the Fe(CN)(,2)(CO) Unit to Electronic Changes asRelated to Its Role in [NiFe]Hydrogenase
¼Ùéáµè§Chia-Huei Lai, Way-Zen Lee, Matthew L. Miller, Joseph H.Reibenspies, Donald J. Darensbourg, and Marcetta Y. Darensbourg
˹éÒ10103

ª×èÍàÃ×èͧConstruction of a Blue Copper Analogue through Iterative RationalProtein Design Cycles Demonstrates Principles of MolecularRecognition in Metal Center Formation
¼Ùéáµè§Homme W. Hellinga
˹éÒ10055

ª×èÍàÃ×èͧStructural Dichotomy in Six-Coordinate d('0) Complexes: TrigonalPrismatic (('t)Bu(,3)SiC(...)C)(,6)Ta('-) and Octahedral(('t)Bu(,3)SiC(...)C)(,6)M('2-) (M=Zr, Hf)
¼Ùéáµè§Thomas P. Vaid, Adam S. Veige, Emil B. Lobkovsky, Wingfield V.Glassey, Peter T. Wolczanski, Louise M. Liable-Sands, Arnold L.Rheingold, and Thomas R. Cundari
˹éÒ10067

ª×èÍàÃ×èͧDNA Interstrand Cross-Link Formation Induced by Bioxalomycin(...)(,2)
¼Ùéáµè§Robert M. Williams and Brad Herberich
˹éÒ10272

ª×èÍàÃ×èͧTopological Analysis of the Charge Density in ShortIntramolecular O-H(...)O Hydrogen Bonds. Very Low TemperatureX-ray and Neutron Diffraction Study of Benzoylacetone
¼Ùéáµè§Georg Kent Hellerup Madsen, Bo Brummerstedt Iversen, Finn KrebsLarsen, Moshe Kapon, George M. Reisner, and Frank H. Herbstein
˹éÒ10040

ª×èÍàÃ×èͧOrganic Artificial Proteinase with Active Site Comprising ThreeSalicylate Residues
¼Ùéáµè§Junghun Suh and Sang Soo Hah
˹éÒ10088

ª×èÍàÃ×èͧPlatinum-Catalyzed Enantioselective Aldol Addition of KeteneSilyl Acetals to Aldehydes
¼Ùéáµè§Osamu Fujimura
˹éÒ10032

ª×èÍàÃ×èͧThe First Selective and Efficient Transport of Imide-ContainingNucleosides and Nucleotides by Lipophilic Cyclen-Zinc(II)Complexes (Cyclen=1,4,7,10-Tetraazacyclododecane)
¼Ùéáµè§Shin Aoki, Yusuke Honda, and Eiichi Kimura
˹éÒ10018

ª×èÍàÃ×èͧConformation-Dependent Cleavage of Hairpin and Triplex NucleicAcids by a Temperature-Insensitive Photonuclease
¼Ùéáµè§Suzanne A. Ciftan and H. Holden Thorp
˹éÒ9995

ª×èÍàÃ×èͧMechanism of Reaction of an Arenediazonium Ion in AqueousSolutions of Acetamide, N-Methylacetamide, andN,N-Dimethylacetamide. A Potential Method for Chemically TaggingPeptide Bonds at Aggregate Interfaces
¼Ùéáµè§Laurence S. Romsted, Jianbing Zhang, and Lanzhen Zhuang
˹éÒ10046

ª×èÍàÃ×èͧEfficient Inhibition of Photo[2+2]cycloaddition ofThymidilyl(3'-5')thymidine and Promotion of Photosplitting of thecis-syn-Cyclobutane Thymine Dimer by Dimeric Zinc(II)-CyclenComplexes Containing m- and p-Xylyl Spacers
¼Ùéáµè§Shin Aoki, Chizuyo Sugimura, and Eiichi Kimura
˹éÒ10094

ª×èÍàÃ×èͧStereospecific ('1)H and ('13)C NMR Assignments of Crotonyl CoAand Hexadienoyl CoA: Conformational Analysis and Comparison withProtein-CoA Complexes
¼Ùéáµè§Wen-Jin Wu, Peter J. Tonge, and Daniel P. Raleigh
˹éÒ9988

ª×èÍàÃ×èͧMinimal Lipidation Stabilizes Protein-Like Molecular Architecture
¼Ùéáµè§Ying-Ching Yu, Matthew Tirrell, and Gregg B. Fields
˹éÒ9979

ª×èÍàÃ×èͧA Novel Electrostatic Approach to Substituent Constants: DoublySubstituted Benzenes
¼Ùéáµè§C.H. Suresh and Shridhar R. Gadre
˹éÒ10276

ª×èÍàÃ×èͧEnergetics of the Catalytic Reaction of Ribonuclease A:AComputational Study of Alternative Mechanisms
¼Ùéáµè§Timothy M. glennon and Arieh Warshel
˹éÒ10234

ª×èÍàÃ×èͧA New Class of Planar-Chiral Ligands: Synthesis of aC(,2)-Symmetric Bisazaferrocene and Its Application in theEnantioselective Cu(I)-Catalyzed Cyclopropanation of Olefins
¼Ùéáµè§Michael M.-C. Lo and Gregory C. Fu
˹éÒ10270

ª×èÍàÃ×èͧRing Opening of the Cyclopropylcarbinyl Radical and Its N- andO-Substituted Analogues: A Theoretical Examination of Very FastUnimolecular Reactions
¼Ùéáµè§David M. Smith, Athanassios Nicolaides, Bernard T. Golding, andLeo Radom
˹éÒ10223

ª×èÍàÃ×èͧPreservation of the Native Structure in Myoglobin at Low pH bySol-Gel Encapsulation
¼Ùéáµè§Tapan Kanti Das, Imran Khan, Denis L. Rousseau, and Joel M.Friedman
˹éÒ10268

ª×èÍàÃ×èͧRhodium Derivatives of Lacunary Heteropolytungstates IllustrateMetalloporphyrin Analogies. Reductive Dimerization toRh(,2)-Linked Keggin Moieties
¼Ùéáµè§Xinyi Wei, Robert E. Bachman, and Michael T. Pope
˹éÒ10248

ª×èÍàÃ×èͧRhodium-Carbon Bond Formation in Aqueous Solution. Synthesis,Structure, and Reactivity of the FunctionalizedHeteropolytungstates, [XW(,11)O(,39)RhCH(,2)COOH]('5,6-)(X=P, Si)
¼Ùéáµè§Xinyi Wei, Michael H. Dickman, and Michael T. Pope
˹éÒ10254

ª×èÍàÃ×èͧBiosynthesis of Desosamine: Construction of a NewMethymycin/Neomethymycin Analogue by Deletion of a DesosamineBiosynthetic Gene
¼Ùéáµè§Lishan Zhao, David H. Sherman, and Hung-wen Liu
˹éÒ10256

ª×èÍàÃ×èͧSynthesis and Triiron Complexes of PDK, a New Porphyrin-LinkedDicarboxylate Ligand
¼Ùéáµè§Xiao-Xiang Zhang, Peter Fuhrmann, and Stephen J. Lippard
˹éÒ10260

ª×èÍàÃ×èͧPalladium/Acetic Acid Catalyzed Allylation of SomePronucleophiles with Simple Alkynes
¼Ùéáµè§Isao Kadota, Akinori Shibuya, Young Soo Gyoung, and YoshinoriYamamoto
˹éÒ10262

ª×èÍàÃ×èͧThe Elusive Titanocene
¼Ùéáµè§Peter B. Hitchcock, Francesca M. Kerton, and Gerard A. Lawless
˹éÒ10264

ª×èÍàÃ×èͧDFT Study of the Reactions between Singlet-Oxygen and aCarotenoid Model
¼Ùéáµè§Marco Garavelli, Fernando Bernardi, Massimo Olivucci, and MichaelA. Robb
˹éÒ10210

ª×èÍàÃ×èͧElectronically Induced Phase Transitions in Ternary TransitionMetal Distannide Systems
¼Ùéáµè§Ulrich Haussermann, Sergei I. Simak, Igor A. Abrikosov, BorjeJohansson, and Sven Lidin
˹éÒ10136

ª×èÍàÃ×èͧTemperature Dependence of Proton NMR Chemical Shift As aCriterion To Identify Low-Barrier Hydrogen Bonds
¼Ùéáµè§Mireia Garcia-Viloca, Ricard Gelabert, Angels Gonzalez-Lafont,Miquel Moreno, and Jose M. Lluch
˹éÒ10203

ª×èÍàÃ×èͧSolid-State Deuterium NMR of Imidazole Ligands in Cytochrome cPeroxidase
¼Ùéáµè§Kai Liu, John Williams, HyeRim Lee, Melissa M. Fitzgerald, GerardM. Jensen, David B. Goodin, and Ann E. McDermott
˹éÒ10199

ª×èÍàÃ×èͧMicrowave Spectroscopy of the Twist C('(...))-Exo/C('(...))-EndoConformation of Prolinamide
¼Ùéáµè§Kimberly A. Kuhls, Charla A. Centrone, and Michael J. Tubergen
˹éÒ10194

ª×èÍàÃ×èͧPhotochemical Formation of Ferrimagnetic Chains from a Pair ofPolymeric Complexes Made of OctahedralBis(hexafluoroacetylacetonato)manganese(II) withDiazodi(4-pyridyl)methane in the Cis and Trans Configurations asRepeating Units
¼Ùéáµè§Satoru Karasawa, Yoko Sano, Takeyuki Akita, Noboru Koga, TetsujiItoh, Hiizu Iwamura, Pierre Rabu, and Marc Drillon
˹éÒ10080

ª×èÍàÃ×èͧNOE Pumping: A Novel NMR Technique for Identification ofCompounds with Binding Affinity to Macromolecules
¼Ùéáµè§Aidi Chen and Michael J. Shapiro
˹éÒ10258

ª×èÍàÃ×èͧOne-Electron Transformations of Paramagnetic Cobalt Complexes.Synthesis and Structure of Cobalt(II) Amidodiphosphine Halide andAlkyl Complexes and Their Reaction with Alkyl Halides
¼Ùéáµè§Michael D. Fryzuk, Daniel B. Leznoff, Robert C. Thompson, andSteven J. Rettig
˹éÒ10126

ª×èÍàÃ×èͧHeterolytic and Homolytic Y-NO Bond Energy Scales ofNitroso-Containing Compounds: Chemical Origin of NO Release andNO Capture
¼Ùéáµè§Jin-Pei Cheng, Ming Xian, Kun Wang, Xiaoqing Zhu, Zheng Yin, andPeng George Wang
˹éÒ10266

ª×èÍàÃ×èͧOxidative Addition of Dihydrogen to[Ir(bisphosphine)(1,5-cyclooctadiene)]BF(,4) Complexes: Kineticand Thermodynamic Selectivity
¼Ùéáµè§Barbara F.M. Kimmich, Ekasith Somsook, and Clark R. Landis
˹éÒ10115

ª×èÍàÃ×èͧMolecular Structures of Fulvalenes Derived fromMethylidenecycloproparenes: X-ray Structure Determinations and abInitio Calculations
¼Ùéáµè§Yitzhak Apeloig, Roland Boese, Brian Halton, and Andreas H.Maulitz
˹éÒ10147

ª×èÍàÃ×èͧReaction Mechanism of Silicon-Hydrogen Bond Activation StudiedUsing Femtosecond to Nanosecond IR Spectroscopy and Ab InitioMethods
¼Ùéáµè§H. Yang, M.C. Asplund, K.T. Kotz, M.J. Wilkens, H. Frei, and C.B.Harris
˹éÒ10154

ª×èÍàÃ×èͧSpreading Behavior of Optically Active MacrocycloamidesConsisting of Helical Chiral Units at the Air-Water Interface andthe Formation of Langmuir-Blodgett Films
¼Ùéáµè§Fei Feng, Tokuji Miyashita, Hitoshi Okubo, and Masahiko Yamaguchi
˹éÒ10166

ª×èÍàÃ×èͧMechanism and Reactivity Parameters of the Reduction ofArylmethyl Radicals from Time-Resolved Electron-PhotoinjectionExperiments
¼Ùéáµè§Jose Gonzalez, Philippe Hapiot, Valery Konovalov, and Jean-MichelSaveant
˹éÒ10171

ª×èÍàÃ×èͧCyclization in Hyperbranched Polymer Syntheses: Characterizationby MALDI-TOF Mass Spectrometry
¼Ùéáµè§Jonathon K. Gooden, Michael L. Gross, Anja Mueller, Andrei D.Stefanescu, and Karen L. Wooley
˹éÒ10180

ª×èÍàÃ×èͧGas-Phase RNA and DNA Ions. 1. H/D Exchange of the [M-H]('-)Anions of Nucleoside 5'-Monophosphates (GMP, dGMP,AMP, dAMP, CMP, dCMP, UMP, dTMP), Ribose 5-Monophosphate, and2-Deoxyribose 5-Monophosphate with D(,2)O and D(,2)S
¼Ùéáµè§Michael A. Freitas, Stone D.-H. Shi, Christopher L. Hendrickson,and Alan G. Marshall
˹éÒ10187

Vol. 120 No.38,30 September 1998
ª×èÍàÃ×èͧA Solid-State Deuterium NMR Study of the Localized Dynamics atthe C9pG10 Step in the DNA Dodecamer [d(CGCGAATTCGCG)](,2)
¼Ùéáµè§Mary E. Hatcher, Debra L. Mattiello, Gary A. Meints, John Orban,and Gary P. Drobny
˹éÒ9850

ª×èÍàÃ×èͧStructure and Reactivity of Dinuclear Cobalt(III) Complexes withPeroxide and Phosphate Diester Analogues Bridging the Metal Ions
¼Ùéáµè§Jin Seog Seo, Rosemary C. Hynes, Daniel Williams, Jik Chin, andNack-Do Sung
˹éÒ9943

ª×èÍàÃ×èͧResonance Raman Spectra Show That Coenzyme B(,12) Binding toMethylmalonyl-Coenzyme A Mutase Changes the Corrin RingConformation but Leaves the Co-C Bond Essentially Unaffected
¼Ùéáµè§Shoulian Dong, Raghavakaimal Padmakumar, Nilesh Maiti, RumaBanerjee, and Thomas G. Spiro
˹éÒ9947

ª×èÍàÃ×èͧNew Domino Sequences Involving Successive Cleavage ofCarbon-Carbon and Carbon-Oxygen Bonds: Discrete Product SelectionDictated by Catalyst Ligands
¼Ùéáµè§Masahiro Murakami, Tamon Itahashi, Hideki Amii, Kunio Takahashi,and Yoshihiko Ito
˹éÒ9949

ª×èÍàÃ×èͧExpression, Purification, and Characterization of TylMl, anN,N-Dimethyltransferase Involved in the Biosynthesis ofMycaminose
¼Ùéáµè§Huawei Chen, Zhihong Guo, and Hung-wen Liu
˹éÒ9951

ª×èÍàÃ×èͧDirect Observation of a Transition Metal Alkane Complex,CpRe(CO)(,2)(cyclopentane), Using NMR Spectroscopy
¼Ùéáµè§Spili Geftakis and Graham E. Ball
˹éÒ9953

ª×èÍàÃ×èͧBis(diisopropylamino)silylene and Its Dimer
¼Ùéáµè§Shinobu Tsutsui, Kenkichi Sakamoto, and Mitsuo Kira
˹éÒ9955

ª×èÍàÃ×èͧChromophore Orientation in Liposome Membranes Probed with FlowDichroism
¼Ùéáµè§Malin Ardhammar, Nabil Mikati, and Bengt Norden
˹éÒ9957

ª×èÍàÃ×èͧA New Class of Self-Assembled Monolayers:closo-B(,12)H(,11)S('3-) on Gold
¼Ùéáµè§Laura J. Yeager, Fusayo Saeki, Kenneth Shelly, M. FrederickHawthorne, and Robin L. Garrell
˹éÒ9961

ª×èÍàÃ×èͧSpontaneous Formation of Vesicles from Complexes of BlockIonomers and Surfactants
¼Ùéáµè§A.V. Kabanov, T.K. Bronich, V.A. Kabonov, K. Yu, and A. Eisenberg
˹éÒ9941

ª×èÍàÃ×èͧStructural Basis for Clinical Longevity of Carbapenem Antibioticsin the Face of Challenge by the Common Class A (...)-Lactamasesfrom the Antibiotic-Resistant Bacteria
¼Ùéáµè§Laurent Maveyraud, Lionel Mourey, Lakshmi P. Kotra, Jean-DenisPedelacq, Valerie Guillet, Shahriar Mobashery, and Jean-PierreSamama
˹éÒ9748

ª×èÍàÃ×èͧAnisotropic Intramolecular Backbone Dynamics of UbiquitinCharacterized by NMR Relaxation and MD Computer Simulation
¼Ùéáµè§S.F. Lienin, T. Bremi, B. Brutscher, R. Bruschweiler, and R.R.Ernst
˹éÒ9870

ª×èÍàÃ×èͧPentacoordinate Siliconate Tetraanionic Molecular Squares.Synthesis; Structure, and Solution Conformation of a NovelTetraanion-Tetracation Ion Pair
¼Ùéáµè§Dianne J. McCord, James H. Small, John Greaves, Que N. Van, A.J.Shaka, E.B. Fleischer, and K.J. Shea
˹éÒ9763

ª×èÍàÃ×èͧSelf-Assembly, Chiroptical Properties, and Host-Guest Chemistryof Chiral Pt-Pt and Pt-Pd Tetranuclear Macrocycles. CircularDichroism Studies on Neutral Guest Inclusion Phenomena
¼Ùéáµè§Christian Miiller, Jeffery A. Whiteford, and Peter J. Stang
˹éÒ9827

ª×èÍàÃ×èͧReversible Molecular Capsules Composed of Two Cavitands Linkedvia an Assortment of Charged-Hydrogen Bonds and Covalent Bonds
¼Ùéáµè§Robert G. Chapman and John C. Sherman
˹éÒ9818

ª×èÍàÃ×èͧAzaspiracid, a New Marine Toxin Having Unique Spiro RingAssemblies, Isolated from Irish Mussels, Mytilus edulis
¼Ùéáµè§Masayuki Satake, Katsuya Ofuji, Hideo Naoki, Kevin J. James,Ambrose Furey, Terry McMahon, Joe Silke, and Takeshi Yasumoto
˹éÒ9967

ª×èÍàÃ×èͧGlycine Decarboxylation: The Free Radical Mechanism
¼Ùéáµè§Marija Bonifacic, Igor Stefanic, Gordon L. Hug, David A.Armstrong, and Klaus-Dieter Asmus
˹éÒ9930

ª×èÍàÃ×èͧBehavior of Boron Trifluoride in Cryosolutions: A Combined abInition, Monte Carlo, and FTIR Investigation
¼Ùéáµè§W.A. Herrebout and B.J. van der Veken
˹éÒ9921

ª×èÍàÃ×èͧIn-Plane Resistivity of Ultrathin Gold Films: A High Sensitivity,Molecularly Differentiated Probe of Mercaptan Chemisorption atthe Liquid-Metal Interface
¼Ùéáµè§Yumo Zhang, Roger H. Terrill, and Paul W. Bohn
˹éÒ9969

ª×èÍàÃ×èͧReactive Dyes as a Method for Rapid Screening of HomogeneousCataysts
¼Ùéáµè§Alan C. Cooper, Lenore H. McAlexander, Dong-Heon Lee, Matthew T.Torres, and Robert H. Crabtree
˹éÒ9971

ª×èÍàÃ×èͧRedox Cycling of Segmented Copper Helicates
¼Ùéáµè§Abdelkrim El-ghayouy, Anthony Harriman, Andre De Cian, JeanFischer, and Raymond Ziessel
˹éÒ9973

ª×èÍàÃ×èͧMechanism for the Catalytic Activation of Ecteinascidin 743 andIts Subsequent Alkylation of Guanine N2
¼Ùéáµè§Bob M. Moore, II, Frederick C. Seaman, Richard T. Wheelhouse, andLaurence H. Hurley
˹éÒ9975

ª×èÍàÃ×èͧNovel Spiro Phosphinite Ligands and Their Application inHomogeneous Catalytic Hydrogenation Reactions
¼Ùéáµè§Albert S.C. Chan, Wenhao Hu, Cheng-Chao Pai, Chak-Po Lau,Yaozhong Jiang, Aiqiao Mi, Ming Yan, Jian Sun, Rongliang Lou, andJingen Deng
˹éÒ9975

ª×èÍàÃ×èͧSynthesis of the First Expanded Carbaporphyrinoid by the '4+1'Approach
¼Ùéáµè§Timothy D. Lash and Daniel T. Richter
˹éÒ9965

ª×èÍàÃ×èͧElucidation of Deceptively Slow Magnetization Exchange betweenProtein Labile Protons and Water by Dilution-Enhanced ExchangeSpectroscopy
¼Ùéáµè§Nenad Juranic, Zsolt Zolnai, and Slobodan Macura
˹éÒ9963

ª×èÍàÃ×èͧA New Class of Chiral Bridged Metallocene: Synthesis, Structure,and Olefin (Co)polymerization Behavior of rac- andmeso-1,2-CH(,2)CH(,2){4-(7-Me-indenyl)}(,2)ZrCl(,2)
¼Ùéáµè§Colin J. Schaverien, Rene Ernst, Peter Schut, W. Mason Skiff,Luigi Resconi, Elisabetta Barbassa, Davide Balboni, Yuri A.Dubitsky, A. Guy Orpen, Pierluigi Mercandelli, Massimo Moret, andAngelo Sironi
˹éÒ9945

ª×èÍàÃ×èͧ('15)N Chemical Shift Tensors in Nucleic Acid Bases
¼Ùéáµè§Jian Zhi Hu, Julio C. Facelli, Donald W. Alderman, Ronald J.Pugmire, and David M. Grant
˹éÒ9863

ª×èÍàÃ×èͧDetermination of the Protein Backbone Dihedral Angle (...) from aCombination of NMR-Derived Cross-Correlation Spin RelaxationRates
¼Ùéáµè§Daiwen Yang and Lewis E. Kay
˹éÒ9880

ª×èÍàÃ×èͧElectrochemical Reduction of NO by Myoglobin in Surfactant Film:Characterization and Reactivity of the Nitroxyl (NO-) Adduct
¼Ùéáµè§Mekki Bayachou, Rong Lin, William Cho, and Patrick J. Farmer
˹éÒ9888

ª×èÍàÃ×èͧOxygen Speciation in Hydrous Silicate Glasses: An Oxygen-17 NMRStudy
¼Ùéáµè§Zhi Xu, Hideki Maekawa, Jane V. Oglesby, and Jonathan F. Stebbins
˹éÒ9894

ª×èÍàÃ×èͧHigh-Level Computational Study of the Stereoelectronic Effects ofSubstituents on Alkene Epoxidations with Peroxyformic Acid
¼Ùéáµè§Robert D. Bach, Mikhail N. Glukhovtsev, and Carlos Gonzalez
˹éÒ9902

ª×èÍàÃ×èͧA New [2+2] Functionalization of C(,60) with Alkyl-Substituted1,3-Butadienes: A Mechanistic Approach. Stereochemistry andIsotope Effects
¼Ùéáµè§Georgios Vassilikogiannakis, Nikos Chronakis, and MichaelOrfanopoulos
˹éÒ9911

ª×èÍàÃ×èͧMechanism of the Transformation of a Stiff Polymer LyotropicNematic Liquid Crystal to the Cholesteric State byDopant-Mediated Chiral Information Transfer
¼Ùéáµè§Mark M. Green, Stefania Zanella, Hong Gu, Takahiro Sato, GiovanniGottarelli, Salil K. Jha, Gian Piero Spada, Anne MarieSchoevaars, Ben Feringa, and Akio Teramoto
˹éÒ9810

ª×èÍàÃ×èͧA Molecular Precursor Route to Active and SelectiveVanadia-Silica-Zirconia Heterogeneous Catalysts for the OxidativeDehydrogenation of Propane
¼Ùéáµè§Ron Rulkens and T. Don Tilley
˹éÒ9959

ª×èÍàÃ×èͧQuantitative Analysis of the Chiral Amplification in the AminoAlcohol-Promoted Asymmetric Alkylation of Aldehydes withDialkylzincs
¼Ùéáµè§Masato Kitamura, Seiji Suga, Hiromasa Oka, and Ryoji Noyori
˹éÒ9800

ª×èÍàÃ×èͧA Photoresponsive Silicon Radical within a Porphyrin (...)-Cloud:Photolysis of Organo-and Nitroxysilicon Porphyrins with VisibleLight
¼Ùéáµè§Jian-Yu Zheng, Katsuaki Donishi, and Takuzo Aida
˹éÒ9838

ª×èÍàÃ×èͧCatalytic Synthesis of Poly(arylmethylgermanes) by DemethanativeCoupling: A Mild Route to (...)-Conjugated Polymers
¼Ùéáµè§Sandra M. Katz, Jennifer A. Reichl, and Konald H. Berry
˹éÒ9844

ª×èÍàÃ×èͧGeneral Solid-Phase Synthesis Approach To Prepare Mechanism-BasedAspartyl Protease Inhibitor Libraries. Identification of PotentCathepsin D Inhibitors
¼Ùéáµè§Christina E. Lee, Ellen K. Kick, and Jonathan A. Ellman
˹éÒ9735

ª×èÍàÃ×èͧTriplex-Directed Interstrand DNA Cross-Linking byDiaziridinylquinone-Oligonucleotide Conjugates
¼Ùéáµè§Michael W. Reed, Ansel Wald, and Rich B. Meyer
˹éÒ9729

ª×èÍàÃ×èͧLocal Reactivity of Charybdotoxin, a K('+) Channel Blocker
¼Ùéáµè§Joel Ireta, Marcelo Galvan, Kyeonjgae Cho, and John D.Joannopoulos
˹éÒ9771

ª×èÍàÃ×èͧSide Chain Dendritic Polymers: Synthesis and Physical Properties
¼Ùéáµè§S. Jahromi, B. Coussens, N. Meijerink, and A. W. M. Braam
˹éÒ9753

ª×èÍàÃ×èͧSteric and Electronic Control of Dynamic Processes inAryl-Bridged Dicyclooctatetraenes and Their Dianions
¼Ùéáµè§Stuart W. Staley, Joanne D. Kehlbeck, Russell A. Grimm, Rachel A.Sablosky, Patrik Boman, and Bertil Eliasson
˹éÒ9793

ª×èÍàÃ×èͧUsing Self-Assembly To Control the Structure of DNA Monolayers onGold: A Neutron Reflectivity Study
¼Ùéáµè§Rastislav Levicky, Tonya M. Herne, Michael J. Tarlov, and SushilK. Satija
˹éÒ9787

Vol. 120 No.37,23 September 1998
ª×èÍàÃ×èͧA Single-Crystal ('59)Co NMR Study of Vitamin B(,12)
¼Ùéáµè§William P. Power, Christopher W. Kirby, and Nicholas J. Taylor
˹éÒ9428

ª×èÍàÃ×èͧH-Phosphonate Approach for Solid-Phase Synthesis ofOligodeoxyribonucleoside Boranophosphates and TheirCharacterization
¼Ùéáµè§Dmitri S. Sergueev and Barbara Ramsay Shaw
˹éÒ9417

ª×èÍàÃ×èͧSmall Molecule Binding to the Mixed-Valent Diiron Center ofMethane Monooxygenase Hydroxylase form Methylococcus capsulatus(Bath) as Revealed by ENDOR Spectroscopy
¼Ùéáµè§Jean-Paul Willems, Ann M. Valentine, Ryszard Gurbiel, Stephen J.Lippard, and Brian M. Hoffman
˹éÒ9410

ª×èÍàÃ×èͧA Highly Active Catalyst for Palladium-Catalyzed Cross-CouplingReactions: Room-Temperature Suzuki Couplings and Amination ofUnactivated Aryl Chlorides
¼Ùéáµè§David W. Old, John P. Wolfe, and Stephen L. Buchwald
˹éÒ9722

ª×èÍàÃ×èͧContinuum Solvent Studies of the Stability of DNA, RNA, andPhosphoramidate-DNA Helices
¼Ùéáµè§Jayashree Srinivasan, Thomas E. Cheatham, III, Piotr Cieplak,Peter A. Kollman, and David A. Case
˹éÒ9401

ª×èÍàÃ×èͧSynthesis, Structure, and Properties of a Helical Columnar LiquidCrystal
¼Ùéáµè§Colin Nuckolls and Thomas J. Katz
˹éÒ9541

ª×èÍàÃ×èͧActivation Energies for Dissociation of Double StrandOligonucleotide Anions: Evidence for Watson-Crick Base Pairing inVacuo
¼Ùéáµè§Paul D. Schnier, John S. K.assen, Eric F. Strittmatter, and EvanR. Williams
˹éÒ9605

ª×èÍàÃ×èͧFormation of Redox-Active, Two-Component Films by ElectrochemicalReduction of C(,60) and Transition Metal Complexes
¼Ùéáµè§Alan L. Balch, David A. Costa, and Krzysztof Winkler
˹éÒ9614

ª×èÍàÃ×èͧTwo Distinct Electrophilic Oxidants Effect Hydroxylation inCytochrome P-450-Catalyzed Reactions
¼Ùéáµè§Patrick H. Toy, Martin Newcomb, Minor J. Coon, and Alfin D.N. Vaz
˹éÒ9718

ª×èÍàÃ×èͧComparative Effects of Substrates and Pterin Cofactor on the HemeMidpoint Potential in Inducible and Neuronal Nitric OxideSynthases.
¼Ùéáµè§Anthony Presta, Anne M. Weber-Main, Marian T. Stankovich, andDennis J. Stuehr
˹éÒ9460

ª×èÍàÃ×èͧActivation Parameters for the Carbon-Cobalt Bond Homolysis ofCoenzyme B(,12) Induced by the B(,12)-Dependent RibonucleotideReductase from Lactobacillus leichmannii
¼Ùéáµè§Kenneth L. Brown and Jing Li
˹éÒ9466

ª×èÍàÃ×èͧ(...)-Turn Preferences Induced by 2,3-MethanophenylalanineChirality
¼Ùéáµè§A.I. Jimenez, C. Cativiela, A. Aubry, and M. Marraud
˹éÒ9452

ª×èÍàÃ×èͧSize-Dependent Molecular Dissociation on Mass-Selected, SupportedMetal Clusters
¼Ùéáµè§U. Heiz, F. Vanolli, A. Sanchez, and W.-D. Schneider
˹éÒ9668

ª×èÍàÃ×èͧRhodopsin Emission in Real Time: A New Aspect of the PrimaryEvent in Vision
¼Ùéáµè§Haik Chosrowjan, Noboru Mataga, Yutaka Shibata, ShujiTachibanaki, Hideki Kandori, Yoshinori Shichida, Tetsuji Okada,and Tsutomu Kouyama
˹éÒ9706

ª×èÍàÃ×èͧStructural Comparison of Homologous Reduced Peptide, ReducedAzapeptide, Iminoazapeptide, and Methyleneoxypeptide Analogues
¼Ùéáµè§R. Vanderesse, V. Grand, D. Limal, A. Vicherat, M. Marraud, C.Didierjean, and A. Aubry
˹éÒ9444

ª×èÍàÃ×èͧSupramolecular Liquid Crystals. Self-Assembly of a TrimericSupramolecular Disk and Its Self-Organization into a ColumnarDiscotic Mesophase
¼Ùéáµè§Mauricio Suarez, Jean-Marie Lehn, Steven C. Zimmerman, AntoineSkoulios, and Benoit Heinrich
˹éÒ9526

ª×èÍàÃ×èͧNanocluster Formation Synthetic, Kinetic, and MechanisticStudies. The Detection of, and Then Methods To Avoid, HydrogenMass-Transfer Limitations in the Synthesis of Polyoxoanion-andTetrabutylammonium-Stabilized, Near-Monodisperse 40(,-'+) 6 AdegreeC Rh(0)
¼Ùéáµè§John D. Aiken III and Richard G. Finke
˹éÒ9545

ª×èÍàÃ×èͧMillion-Fold Acceleration of a Diels-Alder Reaction due toCombined Lewis Acid and Micellar Catalysis in Water
¼Ùéáµè§Sijbren Otto, Jan B.F.N. Egberts, and Jan C.T. Kwak
˹éÒ9517

ª×èÍàÃ×èͧMCPBA Epoxidation of Alkenes: Reinvestigation of Correlationbetween Rate and Ionization Potential
¼Ùéáµè§Cheal Kim, Teddy G. Traylor, and Charles L. Perrin
˹éÒ9513

ª×èÍàÃ×èͧSubstituent Effects on the Reactivity of the Silicon-CarbonDouble Bond. Resonance, Inductive, and Steric Effects ofSubstituents at Silicon on the Reactivity of Simple1-Methylsilenes
¼Ùéáµè§William J. Leigh, Rabah Boukherroub, and Corinna Kerst
˹éÒ9504

ª×èÍàÃ×èͧ(...)-Sulfonyl Carbanions: Combined Kinetic, Thermodynamic, andNMR Approaches for the Study of the Ionization of Benzyltriflonesin Me(,2)SO and H(,2)O-Me(,2)SO Mixtures
¼Ùéáµè§F. Terrier, E. Kizilian, R. Goumont, N. Faucher, and C. Wakselman
˹éÒ9496

ª×èÍàÃ×èͧSoluble Supports Tailored for Organic Synthesis: Parallel PolymerSynthesis via Sequential Normal/Living Free Radical Processes
¼Ùéáµè§Dennis J. Gravert, Anita Datta, Paul Wentworth Jr., and Kim D.Janda
˹éÒ9481

ª×èÍàÃ×èͧOne-Step Biocatalytic Synthesis of Linear Polyesters with PendantHydroxyl Groups
¼Ùéáµè§Billie J. Kline, Eric J. Beckman, and Alan J. Russell
˹éÒ9475

ª×èÍàÃ×èͧDefining the Orientation of the ('15)N Shielding Tensor Using('15)N NMR Relaxation Data for a Protein in Solution
¼Ùéáµè§Jonathan Boyd and Christina Redfield
˹éÒ9692

ª×èÍàÃ×èͧLong-Range Triplet Energy Transfer between MetallointercalatorsTethered to DNA: Importance of Intercalation, Stacking, andDistance
¼Ùéáµè§R. Erik Holmlin, Ricky T. Tong, and Jacqueline K. Barton
˹éÒ9724

ª×èÍàÃ×èͧOn the Mechanism of Matrix-Assisted Room TemperaturePhosphorescence
¼Ùéáµè§Christine A. Mitchell, Richard W. Gurney, Sei-Hum Jang, and BartKahr
˹éÒ9726

ª×èÍàÃ×èͧA Model Structure for the Resting State of Cyanocuprate ReagentsR(,2)Cu(CN)Li(,2). The X-ray Crystal Structure of[Ar(,2)Cu(CN)Li(,2)(THF)(,4)](...)
¼Ùéáµè§Claudia M.P. Kronenburg, Johann T.B.H. Jastrzebski, Anthony L.Spek, and Gerard van Koten
˹éÒ9688

ª×èÍàÃ×èͧElectrochemistry and Electrogenerated Chemiluminescence Processesof the Components of Aluminum Quinolate/Triarylamine, andRelated Organic Light-Emitting Diodes
¼Ùéáµè§J.D. Anderson, E.M. McDonald, P.A. Lee, M.L. Anderson, E.L.Ritchie, H.K. Hall, T. Hopkins, E.A. Mash, J. Wang, A. Padias,S. Thayumanavan, S. Barlow, S.R. Marder, G.E. Jabbour, S. Shaheen,B. Kippelen, N. Peyghambarian, R.M. Wightman, and N.R. Armstrong
˹éÒ9646

ª×èÍàÃ×èͧSynthesis Structure and Coordination Chemistry of MoAs(,8)('2-)
¼Ùéáµè§Bryan W. Eichhorn, Sundeep P. Mattamana, Donna R. Gardner, andJames C. Fettinger
˹éÒ9708

ª×èÍàÃ×èͧRegioselectivity and Chemoselectivity Analysis of Oxazole andThiazole Ring Formation by the Peptide-Heterocyclizing MicrocinB17 Synthetase Using High-Resolution MS/MS
¼Ùéáµè§Neil L. Kelleher, Peter J. Belshaw, and Christophere T. Walsh
˹éÒ9716

ª×èÍàÃ×èͧHeterobinucleating Ligand-Induced Structural and ChemicalVariations in [(L)Fe('III)-O-Cu('II)]+ (...)-Oxo Complexes
¼Ùéáµè§Honorio V. Obias, Gino P.F. van Strijdonck, Dong-Heon Lee,Martina Ralle, Ninian J. Blackburn, and Kenneth D. Karlin
˹éÒ9696

ª×èÍàÃ×èͧCDP-6-deoxy-6,6-difluoro-D-glucose: A Mechanism-Based Inhibitorfor CDP-D-glucose 4,6-Dehydratase
¼Ùéáµè§Cheng-Wei T. Chang, Xuemei H. Chen, and Hung-wen Liu
˹éÒ9698

ª×èÍàÃ×èͧNanometer-Scale Patterning of Metals by Electrodeposition from anSTM Tip in Air
¼Ùéáµè§Francis P. Zamborini and Richard M. Crooks
˹éÒ9700

ª×èÍàÃ×èͧCobalt-Mediated Intermolecular Allyl/Alkyne [3+2+2] CycloadditionReactions. A Practical Metal Template for Convergent Synthesis ofFunctionalized Seven-Membered Rings
¼Ùéáµè§Nola Etkin, Trevor L. Dzwiniel, Kathy E. Schweibert, and JeffreyM. Stryker
˹éÒ9702

ª×èÍàÃ×èͧMagnetic Circular Dichroism Study of the All-Ferrous [4Fe-4S]Cluster of the Fe-Protein of Azotobacter vinelandii Nitrogenase
¼Ùéáµè§Sun Jae Yoo, Hayley C. Angove, Barbara K. Burgess, Eckard Munck,and Jim Peterson
˹éÒ9704

ª×èÍàÃ×èͧSelf-Association without Regard to Prototropy. A Heterocycle ThatForms Extremely Stable Quadruply Hydrogen-Bonded Dimers
¼Ùéáµè§Perry S. Corbin and Steven C. Zimmerman
˹éÒ9710

ª×èÍàÃ×èͧBipyrrole-Based [2]Catenane: A New Type of Anion Receptor
¼Ùéáµè§Andrei Andrievsky, Friedrich Ahuis, Jonathan L. Sessler, FritzVogtle, D. Gudat, and Mehdi Moini
˹éÒ9712

ª×èÍàÃ×èͧThe Reaction of (Trialkylsilyl)vinylketenes with CarbenoidReagents: A New [4+1] Annulation Route to Cyclopentenones
¼Ùéáµè§Jennifer L. Loebach, Dawn M. Bennett, and Rick L. Danheiser
˹éÒ9690

ª×èÍàÃ×èͧNovel 1,2-Rearrangement of Porphyrinatorhodium(III) Alkyls: Cis(...)-Hydride Elimination/Olefin Metal-Hydride Insertion Pathway
¼Ùéáµè§Kin Wah Mak and Kin Shing Chan
˹éÒ9686

ª×èÍàÃ×èͧDistinct Metal Environment in Fe-Substituted Manganese SuperoxideDismutase Provides a Structural Basis of Metal Specificity
¼Ùéáµè§Ross A. Edward, Mei M. Whittaker, James W. Whittaker, Geoffrey B.Jameson, and Edward N. Baker
˹éÒ9684

ª×èÍàÃ×èͧConformational Preferences of RNase A C-Peptide DerivativesContaining a Highly Constrained Analogue of Phenylalanine
¼Ùéáµè§Destardi Moye-Sherman, Song Jin, Inhye Ham, Dongyeol Lim, J.Martin Scholtz, and Kevin Burgess
˹éÒ9435

ª×èÍàÃ×èͧComputer Simulation of Crystallization from Solution
¼Ùéáµè§Jamshed Anwar and Papa Kofi Boateng
˹éÒ9600

ª×èÍàÃ×èͧConformational Complexity of Succinic Acid and Its Monoanion inthe Gas Phase and in Solution: Ab Initio Calculations and MonteCarlo Simulations
¼Ùéáµè§Daniel J. Price, John D. Roberts, and William L. Jorgensen
˹éÒ9672

ª×èÍàÃ×èͧLow-Valent Ditantalum ComplexTa(,2)((...)-BH(,3))((...)dmpm)(,3)((...)('2)-BH(,4))(,2): FirstDinuclear Compound Containing a Bridging BH(,3) Group with DirectTa-B Bonds
¼Ùéáµè§F. Albert Cotton, Carlos A. Murillo, and Xiaoping Wang
˹éÒ9594

ª×èÍàÃ×èͧSize-Selective and Epitaxial Electrochemical/Chemical Synthesisof Sulfur-Passivated Cadmium Sulfide Nanocrystals on Graphite
¼Ùéáµè§S. Gorer, J.A. Ganske, J.C. Hemminger, and R.M. Penner
˹éÒ9584

ª×èÍàÃ×èͧMechanisms of Decomposition of Aryl N-(Methoxycarbonyl)sulfamatesin Aqueous Media
¼Ùéáµè§Patrick Blans and Alain Vigroux
˹éÒ9574

ª×èÍàÃ×èͧSpectroscopic and Geometric Variations in Perturbed Blue CopperCenters: Electronic Structures of Stellacyanin and Cucumber BasicProtein
¼Ùéáµè§Louis B. LaCroix, David W. Randall, Aram M. Nersissian, CarlaW.G. Hoitink, Gerard W. Canters, Joan S. Valentine, and Edward I.Solomon
˹éÒ9621

ª×èÍàÃ×èͧOxidant-Induced Hydride Abstraction from[Pt((...)-PBu('t)(,2))(H)(PBu('t)(,2)H)](,2) Yielding[Pt(,2)((...)-PB('t)(,2))(,2)(H)(PBu('t)(,2)H)(,2)]C(,3)(CN)(,5).Spectroscopic, Crystallographic, and Theoretical Comparison ofthe Structures of Two 'Tautomers'
¼Ùéáµè§Piero Leoni, Marco Pasquali, Alessandro Fortunelli, GuidoGermano, and Alberto Albinati
˹éÒ9564

ª×èÍàÃ×èͧBent vs Linear Metallocenes Involving C(,5)Me(,5) vs C(,8)H(,8)Ligands: Synthesis, Structure, and Reactivity of theTriple-Decked(C(,5)Me(,5))(THF)(,x)Sm(C(,8)H(,8))Sm(THF)(,x)(C(,5)Me(,5))(x=0,1)Complexes Including a Formal Two-Electron Oxidative Addition
¼Ùéáµè§William J. Evans, Robert D. Clark, Mohammad A. Ansari, and JosephW. Ziller
˹éÒ9555

ª×èÍàÃ×èͧSynthesis of Bifunctional Photorefractive Polymers with Net Gain:Design Strategy Amenable to Combinatorial Optimization
¼Ùéáµè§Matthew S. Bratcher, Michael S. DeClue, Anders Grunnet-Jepsen,Daniel Wright, Barry R. Smith, W.E. Moerner, and Jay S. Siegel
˹éÒ9680

ª×èÍàÃ×èͧSelf-Assembly of a Novel Organometallic-Inorganic Block Copolymerin Solution and the Solid State: Nonintrusive Observation ofNovel WormlikePoly(ferrocenyldimethylsilane)-b-Poly(dimethylsiloxane) Micelles
¼Ùéáµè§Jason Massey, K. Nicole Power, Ian Manners, and Mitchell A.Winnik
˹éÒ9533

ª×èÍàÃ×èͧSr(.3)ARhO(,6) (A=Li, Na): Crystallization of a Rhodium(V) Oxidefrom Molten Hydroxide
¼Ùéáµè§Barbara A. Reisner and Angelica M. Stacy
˹éÒ9682

ª×èÍàÃ×èͧConformational Diversity of [D-Pen('2),D-Pen('5)]Enkephalin asStudied by Magic-Angle Spinning Liquid-Crystal NMR Spectroscopyand Multiconformational Analysis
¼Ùéáµè§Atsuomi Kimura, Kenji Takamoto, and Hideaki Fujiwara
˹éÒ9656

ª×èÍàÃ×èͧMixed Self-assembled Monolayers of Rigid Biphenyl Thiols: Impactof Solvent and Dipole Moment
¼Ùéáµè§Jung F. Kang, Sheng Liao, Rainer Jordan, and Abraham Ulman
˹éÒ9662

ª×èÍàÃ×èͧMultiple Oxygenase Reactions in the Biosynthesis of Taxoids
¼Ùéáµè§Wolfgang Eisenreich, Birgitta Menhard, Moung Sook Lee, MeinhartH. Zenk, and Adelbert Bacher
˹éÒ9694

ª×èÍàÃ×èͧNMR Study of Intramolecular Interactions between Aromatic Groups:Van der Waals, Charge-Transfer, or Quadrupolar Interactions?
¼Ùéáµè§Nicholas J. Heaton, Pablo Bello, Bernardo Herradon, Aranzazu delCampo, and Jesus Jimenez-Barbero
˹éÒ9632

ª×èÍàÃ×èͧ5,5'-Bis(dimesitylbory)-2,2'-bithiophene and5,5'-Bis(dimesitylboryl)-2,2':5',2'-terthiophene as a NovelFamily of Electron-Transporting Amorphous Molecular Materials
¼Ùéáµè§Tetsuya Noda and Yasuhiko Shirota
˹éÒ9714

Vol. 120 No.36,16 September 1998
ª×èÍàÃ×èͧDefinition of the Effect and Role of the Bleomycin A(,2) ValerateSubstituents: Preorganization of a Rigid, Compact ConformationImplicated in Sequence-Selective DNA Cleavage
¼Ùéáµè§Dale L. Boger, Timothy M. Ramsey, Hui Cai, Silvia T. Hoehn, andJoAnne Stubbe
˹éÒ9149

ª×èÍàÃ×èͧA Systematic Evaluation of the Bleomycin A(,2) L-Threonine SideChain: Its Role in Preorganization of a Compact ConformationImplicated in Sequence-Selective DNA Cleavage
¼Ùéáµè§Dale L. Boger, Timothy M. Ramsey, Hui Cai, Silvia T. Hoehn, andJoAnne Stubbe
˹éÒ9139

ª×èÍàÃ×èͧCrystal Structure of the Antiarthritic Drug Gold Thiomalate(Myochrysine): A Double-Helical Geometry in the Solid State
¼Ùéáµè§Robert Bau
˹éÒ9380

ª×èÍàÃ×èͧReductive Coupling of Carbonyl Ligands on a Cubane-Type TetraironCluster [Cp(,4)Fe(,4)(CO)(,4)] or[(MeC(,5)H(,4))(,4)Fe(,4)(CO)(,4)] To Give anAcetylene-Coordinated Cluster [Cp(,4)Fe(,4)(HC(...)CH)(,2)] or[(MeC(,5)H(,4)(,4)Fe(,4)(HC(...)CH)(,2)]
¼Ùéáµè§Masaaki Okazaki, Takeo Ohtani, Shinji Inomata, Naohiko Tagaki,and Hiroshi Ogino
˹éÒ9135

ª×èÍàÃ×èͧLong-Range Chiral Induction in Chemical Systems with HelicalOrganization. Promesogenic Monomers in the Formation ofPoly(isocyanide)s and in the Organization of Liquid Crystals
¼Ùéáµè§David B. Amabilino, Elena Ramos, Jose-Luis Serrano, TeresaSierra, and Jaume Veciana
˹éÒ9126

ª×èÍàÃ×èͧRegioselective, Directed Meta Acylation of Aromatic Compounds
¼Ùéáµè§Shuji Akai, Andrew J. Peat, and Stephen L. Buchwald
˹éÒ9119

ª×èÍàÃ×èͧSelf-Organization of Rod-Coil Molecules with Layered CrystallineStates into Thermotropic Liquid Crystalline Assemblies
¼Ùéáµè§Myongsoo Lee, Byoung-Ki Cho, Heesub Kim, Ju-Young Yoon, andWang-Cheol Zin
˹éÒ9168

ª×èÍàÃ×èͧStilbenoid Dimers: Dissection of a Paracyclophane Chromophore
¼Ùéáµè§Guillermo C. Bazan, Warren J. Oldham, Jr., Rene J. Lachicotte,Sergei Tretiak, Vladimir Chernyak, and Shaul Mukamel
˹éÒ9188

ª×èÍàÃ×èͧCarbon-Sulfur Bond-Forming Reductive Elimination Involving sp-,sp('2)-, and sp('3)-Hybridized Carbon. Mechanism, Steric Effects,and Electronic Effects on Sulfide Formation
¼Ùéáµè§Grace Mann, David Baranano, John F. Hartwig, Arnold L. Rheingold,and Ilia A. Guzei
˹éÒ9205

ª×èÍàÃ×èͧInhibition of the NMC-A (...)-Lactamase by a Penicillanic AcidDerivative and the Structural Bases for the Increase in SubstrateProfile of This Antibiotic Resistance Enzyme
¼Ùéáµè§Lionel Mourey, Kazuyuki Miyashita, Peter Swaren, Alexey Bulychev,Jean-Pierre Samama, and Shahriar Mobashery
˹éÒ9382

ª×èÍàÃ×èͧMolecular Basis for Protein Kinase C Isozyme-Selective Binding:The Synthesis, Folding, and Phorbol Ester Binding of theCysteine-Rich Domains of All Protein Kinase C Isozymes
¼Ùéáµè§Kazuhiro Irie, Kentaro Oie, Akifumi Nakahara, Yoshiaki Yanai,Hajime Ohigashi, Paul A. Wender, Hiroyuki Fukuda, HiroakiKonishi, and Ushio Kikkawa
˹éÒ9159

ª×èÍàÃ×èͧReaction Chemistry of Sterically CrowdedTris(pentamethylcyclopentadienyl)samarium
¼Ùéáµè§William J. Evans, Kevin J. Forrestal, and Joseph W. Ziller
˹éÒ9273

ª×èÍàÃ×èͧHighly Efficient Utilization of Hydrogen Peroxide for SelectiveOxygenation of Alkanes Catalyzed by Diiron-SubstitutedPolyoxometalate Precursor
¼Ùéáµè§Noritaka Mizuno, Chika Nozaki, Ikuro Kiyoto, and Makoto Misono
˹éÒ9267

ª×èÍàÃ×èͧThermodynamics of Addition of H(,2), CO, N(,2), and C-H Bonds toM(P('i)Pr(,3))(,2)Cl(M=Ir, Rh). An Unprecedented Metal-CarbonylBond Strength
¼Ùéáµè§Glen P. Rosini, Fuchen Liu, Karsten Krogh-Jespersen, Alan S.Goldman, Chunbang Li, and Steven P. Nolan
˹éÒ9256

ª×èÍàÃ×èͧModels for Verdoheme Hydrolysis. Paramagnetic Products from theRing Opening of Verdohemes, 5-Oxaporphyrin Complexes of Iron(II),with Methoxide Ion
¼Ùéáµè§Richard Koerner, Lechosolaw Latos-Grazynski, and Alan L. Balch
˹éÒ9246

ª×èÍàÃ×èͧX-ray Spectroscopy of Nitric Oxide Binding to Iron in InactiveNitrile Hydratase and a Synthetic Model Compound
¼Ùéáµè§Robert C. Scarrow, Brent S. Strickler, Jeffrey J. Ellison, StevenC. Shoner, Julie A. Kovacs, John G. Cummings, and Mark J. Nelson
˹éÒ9237

ª×èÍàÃ×èͧPillared Derivatives of (...)-Zirconium Phosphate ContainingNonrigid Alkyl Chain Pillars
¼Ùéáµè§G. Alberti, S. Murcia-Mascaros, and R. Vivani
˹éÒ9291

ª×èÍàÃ×èͧRuthenium-Catalyzed Alder Ene Type Reactions. A Formal Synthesisof Alternaric Acid
¼Ùéáµè§Barry M. Trost, Gary D. Probst, and Andreas Schoop
˹éÒ9228

ª×èÍàÃ×èͧDesign and Optimization of New Phosphine Oxazoline Ligands viaHigh-Throughput Catalyst Screening
¼Ùéáµè§Alexander M. Porte, Joe Reibenspies, and Kevin Burgess
˹éÒ9180

ª×èÍàÃ×èͧIntramolecular [4+2] Cycloaddition Reactions of ConjugatedYnones. Formation of Polycyclic Furans via the Generation andRearrangement of Strained Heterocyclic Allenes
¼Ùéáµè§Melanie S.B. Wills and Rick L. Danheiser
˹éÒ9378

ª×èÍàÃ×èͧAltering Diffusivity in Biological Solutions through Modificationof Solution Structure and Dynamics
¼Ùéáµè§Keith E. Laidig, John L. Gainer, and Valerie Daggett
˹éÒ9394

ª×èÍàÃ×èͧA Baeyer-Villiger Approach to ('18)O-Labeled Peroxides: AProtected Form of Unsymmetrically Labeled Hydrogen Peroxide
¼Ùéáµè§Jennifer L. Allen, Kevin P. Paquette, and Ned A. Porter
˹éÒ9362

ª×èÍàÃ×èͧAccelerating the Kinetics of Thiol Self-Assembly on Gold-ASpatial Confinement Effect
¼Ùéáµè§Song Xu, Paul E. Laibinis, and Gang-yu Liu
˹éÒ9356

ª×èÍàÃ×èͧThe First Carbonyl Bond Dissociation Energies of M(CO)(,5) andM(CO)(,4)(C(,2)H(,2))(M=Fe, Ru, and Os): The Role of theAcetylene Ligand from a Density Functional Perspective
¼Ùéáµè§Stephen A. Decker and Mariusz Klobukowski
˹éÒ9342

ª×èÍàÃ×èͧReconstitution of Apo-Glucose Oxidase on Nitrosfpiropyran and FADMixed Monolayers on Gold Electrodes: Photostimulation ofBioelectrocatalytic Features of the Biocatalyst
¼Ùéáµè§Ron Blonder, Itamar Willner, and Andreas F. Buckmann
˹éÒ9335

ª×èÍàÃ×èͧSequence Selective Cleavage of a DNA Octanucleotide byChlorinated Bithiazoles and Bleomycins
¼Ùéáµè§Guy Zuber, James C. Quada, Jr., and Sidney M. Hecht
˹éÒ9368

ª×èÍàÃ×èͧTethered Monolayers of Poly((N-pyrrolyl)alkanethiol) on Au
¼Ùéáµè§Robin L. McCarley and Robert J. Willicut
˹éÒ9296

ª×èÍàÃ×èͧUnusual Rocking Freedom of the Heme in the HydrogenSulfide-Binding Hemoglobin from Lucina pectinata
¼Ùéáµè§Jose F. Cerda-Colon, Eilyn Silfa, and Juan Lopez-Garriga
˹éÒ9312

ª×èÍàÃ×èͧThe Mechanism of the Slippage Approach to Rotaxanes. Origin ofthe 'All-or-Nothing' Substituent Effect
¼Ùéáµè§Francisco M. Raymo, K.N. Houk, and J. Fraser Stoddart
˹éÒ9318

ª×èÍàÃ×èͧThe C(,4)H(,6)('(...)(+)) Potential Energy Surface. 1. TheRing-Opening Reaction of Cyclobutene Radical Cation and RelatedRearrangements
¼Ùéáµè§G. Narahari Sastry, Thomas Bally, Vojtech Hrouda, and Petr Carsky
˹éÒ9323

ª×èÍàÃ×èͧExperimental Support for the Primary Stereoelectronic EffectGoverning Baeyer-Villiger Oxidation and Criegee Rearrangement
¼Ùéáµè§Richard M. Goodman and Yoshito Kishi
˹éÒ9392

ª×èÍàÃ×èͧCOSY Cross-Peaks from ('1)H-('1)H Dipolar Couplings in NMRSpectra of Field Oriented Oligosaccharides
¼Ùéáµè§P.J. Bolon and J.H. Prestegard
˹éÒ9366

ª×èÍàÃ×èͧStable, Monolayer-Protected Metal Alloy Clusters
¼Ùéáµè§Michael J. Hostetler, Chuan-Jian Zhong, Brian K.H. Yen, JimAnderegg, Stephen M. Gross, Neal D. Evans, Marc Porter, and RoyceW. Murray
˹éÒ9396

ª×èÍàÃ×èͧTetraacetylethane Dianion (Tae) As a Bridging Ligand forMolecular Square Complexes: Co('II)(,4)(Tae)(,4)(Dpa)(,4),Dpa=Di-2-pyridylamine, a Chiral Molecular Square in the SolidState
¼Ùéáµè§Yousheng Zhang, Suning Wang, Gary D. Enright, and Steven R.Breeze
˹éÒ9398

ª×èÍàÃ×èͧMechanism of Nucleophilic Attack on 1-and2-Bromo((...)-allyl)palladium Complexes
¼Ùéáµè§Michael G. Organ, Michael Miller, and Zissis Konstantinou
˹éÒ9283

ª×èÍàÃ×èͧDiffusion of Block Copolymers in Liquid CO(,2): Evidence ofSelf-Assembly from Pulsed Field Gradient NMR
¼Ùéáµè§Judith B. Cain, Kewei Zhang, Douglas E. Betts, Joseph M.DeSimone, and Charles S. Johnson, Jr.
˹éÒ9390

ª×èÍàÃ×èͧCarbene Complexes from Olefins, UsingRuHCl(P('i)Pr(,3))(,2(...)) Influence of the Olefin Substituent
¼Ùéáµè§Joseph N. Coalter III, Greg J. Spivak, Helene Gerard, Eric Clot,Ernest R. Davidson, Odile Eisenstein, and Kenneth G. Caulton
˹éÒ9388

ª×èÍàÃ×èͧSynthesis, Structure, and Reactivity of a Remarkable IronSulfide: (TACN)(,2)Fe(,2)S(,6)
¼Ùéáµè§Andrew C. Moreland and Thomas B. Rauchfuss
˹éÒ9376

ª×èÍàÃ×èͧBiosynthesis of Desosamine: Molecular Evidence Suggesting(...)-Glucosylation as a Self-Resistance Mechanism inMethymycin/Neomethymycin Producing Strain, Streptomycesvenezuelae
¼Ùéáµè§Lishan Zhao, David H. Sherman, and Hung-wen Liu
˹éÒ9374

ª×èÍàÃ×èͧBond Stretch Isomerism Still Elusive in Linear TrimetallicComplexes. DFT Calculations on Co(,3)(dipyridylamine)(,4)Cl(,2)
¼Ùéáµè§Marie-Madeleine Rohmer and Marc Benard
˹éÒ9372

ª×èÍàÃ×èͧElectronic Structure of the Chromophore in Green FluorescentProtein (GFP)
¼Ùéáµè§Gerold Bublitz, Brett A. King, and Steven G. Boxer
˹éÒ9370

ª×èÍàÃ×èͧReversible Ethylene Cycloaddition Reactions of Cationic Aluminum(...)-Diketiminate Complexes
¼Ùéáµè§Catherine E. Radzewich, Martyn P. Coles, and Richard F. Jordan
˹éÒ9384

ª×èÍàÃ×èͧFormation of C(,60) Adducts with Two Different Alkyl Groups viaCombination of Electron Transfer and S(,N)2 Reactions
¼Ùéáµè§Shunichi Fukuzumi, Tomoyoshi Suenobu, Takeomi Hirasaka, RyuichiArakawa, and Karl M. Kadish
˹éÒ9220

ª×èÍàÃ×èͧA Predicted Spectrum of HCS, an Intermediate in the Production ofthe Sulfur Compounds Observed in the Collision of CometShoemaker-Levy 9 with Jupiter
¼Ùéáµè§Dennis J. Clouthier and Roger S. Grev
˹éÒ9386

ª×èÍàÃ×èͧForm Dodecahedrapentaene to the '[n]Trannulenes'. A New In-PlaneAromatic Family
¼Ùéáµè§Andrey A. Fokin, Haijun Jiao, and Paul von R. Schleyer
˹éÒ9364

Vol. 120 No.35,9 September 1998
ª×èÍàÃ×èͧDiastereoselective Episulfidation of Strained Cyclic Alkenes by aThiophene Endoperoxide versus Epoxidation by Dimethyldioxirane
¼Ùéáµè§Waldemar Adam, Bettina Frohling, Karl Peters, and StephanWeinkotz
˹éÒ8914

ª×èÍàÃ×èͧThe pH-Rate Profile for the Hydrolysis of a Peptide Bond
¼Ùéáµè§Robert M. Smith and David E. Hansen
˹éÒ8910

ª×èÍàÃ×èͧTransition Metal Promoted Reactions of Boron Hydrides. 15.Titanium-Catalyzed Decaborane-Olefin Hydroborations: One-Step,High-Yield Syntheses of Monoalkyldecaboranes
¼Ùéáµè§Mark J. Pender, Thomas Wideman, Patrick J. Carroll, and Larry G.Sneddon
˹éÒ9108

ª×èÍàÃ×èͧStructure and Transport Properties of a Novel, HeavilyFluorinated Carbohydrate Analogue
¼Ùéáµè§Hong Woo Kim, Paolo Rossi, Richard K. Shoemaker, and Stephen G.DiMagno
˹éÒ9082

ª×èÍàÃ×èͧModulation of the Alignment Tensor of Macromolecules Dissolved ina Dilute Liquid Crystalline Medium
¼Ùéáµè§Benjamin E. Ramirez and Ad Bax
˹éÒ9106

ª×èÍàÃ×èͧConstruction of Novel Polycyclic Ring Systems byTransition-Metal-Catalyzed Cycloisomerization of Ene-Ene-Ynes.Interception of a Carbenoid Intermediate in SkeletalReorganization of Enynes
¼Ùéáµè§Naoto Chatani, Ken Kataoka, Shinji Murai, Naoyuki Furukawa, andYoshio Seki
˹éÒ9104

ª×èÍàÃ×èͧUnexpected Barbier-Grignard Allylation of Aldehydes withMagnesium in Water
¼Ùéáµè§Chao-Jun Li and Wen-Chun Zhang
˹éÒ9102

ª×èÍàÃ×èͧThree Polymorphs of 2-Amino-5-nitropyrimidine: ExperimentalStructures and Theoretical Predictions
¼Ùéáµè§Christer B. Aakeroy, Mark Nieuwenhuyzen, and Sarah L. Price
˹éÒ8986

ª×èÍàÃ×èͧApparent 1,2-Silyl Migrations in Aromatic Carbenes Occur byIntermolecular Silyl Exchanges
¼Ùéáµè§Stephane Sole, Heinz Gornitzka, Olivier Guerret, and Guy Bertrand
˹éÒ9100

ª×èÍàÃ×èͧAntihydrophobic Evidence for the Single Electron TransferMechanism of Nucleophilic Substitution
¼Ùéáµè§M. Uljana Mayer and Ronald Breslow
˹éÒ9098

ª×èÍàÃ×èͧDeprotonation and Oxidation of the W(...)CCH(,2)-W Bridge To Forma C(,2)-Biscarbyne W(...)C-C(...)W Bridge
¼Ùéáµè§B.E. Woodworth, P.S. White, and J.L. Templeton
˹éÒ9028

ª×èÍàÃ×èͧThermal Atropisomerism of Aglucovancomycin Derivatives:Preparation of (M,M,M)-and (P,M,M)-Aglucovancomycins
¼Ùéáµè§Dale L. Boger, Susumu Miyazaki, Olivier Loiseleur, Richard T.Beresis, Steven L. Castle, Jason H. Wu, and Qing Jin
˹éÒ8920

ª×èÍàÃ×èͧA New Class of Fluorinated Polymers by a Mild, Selective, andQuantitative Fluorination
¼Ùéáµè§Yu Ren, Timothy P. Lodge, and Marc A. Hillmyer
˹éÒ9116

ª×èÍàÃ×èͧProbing the Scope of the Asymmetric Dihydroxylation ofPolymer-Bound Olefins. Monitoring by HRMAS NMR Allows forReaction Control and On-Bead Measurement of Enantiomeric Excess
¼Ùéáµè§Rainer Riedl, Robert Tappe, and Albrecht Berkessel
˹éÒ8994

ª×èÍàÃ×èͧDisproportionation of Nitric Oxide Promoted by a Mn Tropocoronand
¼Ùéáµè§Katherine J. Franz and Stephen J. Lippard
˹éÒ9034

ª×èÍàÃ×èͧMechanism of the Stille Reaction. 1. The Trasmetalation Step.Coupling of R('1)I and R('2)SnBu(,3) Catalyzed bytrans-[PdR('1)IL(,2)] (R('1)=C(,6)Cl(,2)F(,3); R('2)=Vinyl,4-Methoxyphenyl; L = AsPh(,3))
¼Ùéáµè§Arturo L. Casado and Pablo Espinet
˹éÒ8978

ª×èÍàÃ×èͧSynthesis of Enantiopure Estrone via a Double Heck Reaction
¼Ùéáµè§Lutz F. Tietze, Thomas Nobel, and Maurus Spescha
˹éÒ8971

ª×èÍàÃ×èͧNanostructured Thermosets from Self-Assembled Amphiphilic BlockCopolymer/Epoxy Resin Mixtures
¼Ùéáµè§Paul M. Lipic, Frank S. Bates, and Marc A. Hillmyer
˹éÒ8963

ª×èÍàÃ×èͧDensity-Functional Approach to Hardness Evaluation and Its Use inthe Study of the Maximum Hardness Principle
¼Ùéáµè§T. Mineva, E. Sicilia, and N. Russo
˹éÒ9053

ª×èÍàÃ×èͧTheoretical Investigation of the Proton Assisted Pathway toFormation of Cytochrome P450 Compound I
¼Ùéáµè§Danni L. Harris and Gilda H. Loew
˹éÒ8941

ª×èÍàÃ×èͧBinding and Electron Transfer between Putidaredoxin andCytochrome P450cam. Theory and Experiments
¼Ùéáµè§Adrian E. Roitberg, Marcia J. Holden, Martin P. Mayhew, Igor V.Kurnikov, David N. Beratan, and Vincent L. Vilker
˹éÒ8927

ª×èÍàÃ×èͧMechanism of Ozone Decomposition on a Manganese Oxide Catalyst.1. In Situ Raman Spectroscopy and Ab Initio Molecular OrbitalCalculations
¼Ùéáµè§Wei Li, G. V. Gibbs, and S. Ted Oyama
˹éÒ9041

ª×èÍàÃ×èͧEnantioselective Resolving Resins from a Combinatorial Library.Kinetic Resolution of Cyclic Amino Acid Derivatives
¼Ùéáµè§M. David Weingarten, Klara Sekanina, and W. Clark Still
˹éÒ9112

ª×èÍàÃ×èͧUse of X-ray Co-crystal Structures and Molecular Modeling ToDesign Potent and Selective Non-peptide Inhibitors of Cathepsin K
¼Ùéáµè§Renee L. DesJarlais, Dennis S. Yamashita, Hye-Ja Oh, Irene N.Uzinskas, Karl F. Erhard, Andrew C. Allen, R. Curtis Haltiwanger,Baoguang Zhao, Ward W. Smith, Sherin S. Abdel-Meguid, KarlaD'Alessio, Cheryl A. Janson, Michael S. McQueney, Thaddeus A.Tomaszek,
˹éÒ9114

ª×èÍàÃ×èͧDissecting the Evolutionary Relationship between 14-Membered and16-Membered Macrolides
¼Ùéáµè§John R. Jacobsen, David E. Cane, and Chaitan Khosla
˹éÒ9096

ª×èÍàÃ×èͧSelf-Assembly Mediated by the Donor-Donor-Acceptor(...)Acceptor-Acceptor-Donor (DDA(...)AAD) Hydrogen-Bonding Motif:Formation of a Robust Hexameric Aggregate
¼Ùéáµè§Sergei V. Kolotuchin and Steven C. Zimmerman
˹éÒ9092

ª×èÍàÃ×èͧChemical Exchange in Diffusion NMR Experiments
¼Ùéáµè§Aidi Chen, Charles S. Johnson, Jr., Melissa Lin, and Michael J.Shapiro
˹éÒ9094

ª×èÍàÃ×èͧRules of Stereoselectivity in Tandem Oxidative PolycyclizationReaction with Rhenium(VII) Oxides
¼Ùéáµè§Santosh C. Sinha, Ehud Keinan, and Subhash C. Sinha
˹éÒ9076

ª×èÍàÃ×èͧCylindrical (...)-Sheet Peptide Assemblies
¼Ùéáµè§Thomas D. Clark, Jillian M. Buriak, Kenji Kobayashi, Markus P.Isler, Duncan E. McRee, and M. Reza Ghadiri
˹éÒ8949

ª×èÍàÃ×èͧDynamic Aspects of Lattice Inclusion Complexation Involving aPhase Change. Equilibrium, Kinetics, and Energetics ofGuest-Binding to a Hydrogen-Bonded Flexible Organic Network
¼Ùéáµè§Takehisa Dewa, Ken Endo, and Yasuhiro Aoyama
˹éÒ8933

ª×èÍàÃ×èͧPolynaphthalene Networks from Bisphenols
¼Ùéáµè§Dennis W. Smith, Jr., David A. Babb, R. Vernon Snelgrove, Paul H.Townsend, III, and Steven J. Martin
˹éÒ9078

ª×èÍàÃ×èͧEPR and Electronic Absorption Spectroscopies of the CO-SensingCooA Protein Reveal a Cysteine-Ligated Low-Spin Ferric Heme
¼Ùéáµè§Mark F. Reynolds, Daniel Shelver, Robert L. Kerby, Ryan B. Parks,Gary P. Roberts, and Judith N. Burstyn
˹éÒ9080

ª×èÍàÃ×èͧSubtle Functional Interactions in the RNA Minor Groove at aNonessential Base Pair
¼Ùéáµè§Barry S. Henderson, Penny J. Beuning, J.-P. Shi, Rolf Bald, JensPeter Furste, Volker A. Erdmann, Karin Musier-Forsyth, and PaulSchimmel
˹éÒ9110

ª×èÍàÃ×èͧAsymmetric Total Synthesis of Callystatin A. Asymmetric AldolAdditions with Titanium Enolates of Acyloxazolidinethiones
¼Ùéáµè§Michael T. Crimmins and Bryan W. King
˹éÒ9084

ª×èÍàÃ×èͧMechanism of Ozone Decomposition on a Manganese Oxide Catalyst.2. Steady-State and Transient Kinetic Studies
¼Ùéáµè§Wei Li and S. Ted Oyama
˹éÒ9047

ª×èÍàÃ×èͧPhotochemistry of2,4-Bis(diazo)-1,2,3,4-tetrahydro-naphthalene-1,3-dione:Selective Photodecomposition of One of the Two Inequivalent DiazoGroups
¼Ùéáµè§Shigeru Murata, Junko Kobayashi, Chiharu Kongou, Mamoru Miyata,Takeshi Matsushita, and Hideo Tomioka
˹éÒ9088

ª×èÍàÃ×èͧEarly Intermediates in Spermidine-Induced DNA Condensation on theSurface of Mica
¼Ùéáµè§Ye Fang and Jan H. Hoh
˹éÒ8903

ª×èÍàÃ×èͧA Catalytic Enantioselective Approach to Chromans and Chromanols.A Total Synthesis of (-)-Calanolides A and B and the Vitamin ENucleus
¼Ùéáµè§Barry M. Trost and F. Dean Toste
˹éÒ9074

ª×èÍàÃ×èͧModeling the Diiron Centers of Non-Heme Iron Enzymes. Preparationof Sterically Hindered Diiron(II) Tetracarboxylate Complexes andTheir Reactions with Dioxygen
¼Ùéáµè§Daniel D. LeCloux, Amy M. Barrios, Tadashi J. Mizoguchi, andStephen J. Lippard
˹éÒ9001

ª×èÍàÃ×èͧTuning the Selectivity of Monoamine Transporter Inhibitors by theStereochemistry of the Nitrogen Lone Pair
¼Ùéáµè§Miles P. Smith, Kenneth M. Johnson, Mei Zhang, Judith L.Flippen-Anderson, and Alan P. Kozikowski
˹éÒ9072

ª×èÍàÃ×èͧSynthesis of a Novel Dendritic Liquid Crystalline Polymer Showinga Ferroelectric SmC Phase
¼Ùéáµè§P. Busson, H. Ihre, and A. Hult
˹éÒ9070

ª×èÍàÃ×èͧUnraveling the Electronic and Vibrational Contributions toDeuterium Isotope Effects on ('13)C Chemical Shifts Using abInitio Model Calculations. Analysis of the Observed IsotopeEffects on Sterically Perturbed Intramolecular Hydrogen-Bonded0-Hydroxy Acyl A
¼Ùéáµè§Jens Abildgaard, Simon Bolvig, and Poul Erik Hansen
˹éÒ9063

ª×èÍàÃ×èͧA Characterization of the Linear P-O-P Bonds inM('4+)(P(,2)O(,7)) Compounds: Bond-Angle Determination bySolid-State NMR
¼Ùéáµè§Robbie J. Iuliucci and Beat H. Meier
˹éÒ9059

ª×èÍàÃ×èͧIs the CD Exciton Chirality Method Applicable to Chiral1,1'-Biphenanthryl Compounds?
¼Ùéáµè§Tetsutaro Hattori, Kenta Sakurai, Nobuyuki Koike, Sotaro Miyano,Hitoshi Goto, Fuyuka Ishiya, and Nobuyuki Harada
˹éÒ9086

ª×èÍàÃ×èͧEnergetic Superiority of Two-Center Hydrogen Bonding Relative ToThree-Center Hydrogen Bonding in a Model System
¼Ùéáµè§Jihong Yang and Samuel H. Gellman
˹éÒ9090

Vol. 120 No.34,2 September 1998
ª×èÍàÃ×èͧStructural and Voltammetric Studies on the Reduction of theBis(2,2'-bipyridyl)platinum(II) Cation in Aprotic Media
¼Ùéáµè§Alan R. Brown, Zijian Guo, Fred W. J. Mosselmans, Simon Parsons,Martin Schroder, and Lesley J. Yellowlees
˹éÒ8805