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issue	9
is Is Part Of of	Onium ions. 24. Oxygen-17 NMR spectroscopic study of oxonium and carboxonium ions New five- and six-coordinate imidazole and imidazolate complexes of ferric tetraphenylporphyrin Methyl-substituted cyclopropylcarbinyl (alias vinyl-bridged ethylene) carbocations. Molecular orbital calculations and criteria for structure representation-nomenclature decisions Additions and Corrections - The Automerization of C11H11 Chlorides and the Stability of Their Cations Onium ions. 23. Structure of oxonium ions: an x-ray crystallographic study of triethyloxonium hexafluorophosphate and triphenyloxonium tetraphenylborate Acid catalyzed hydration of .alpha.-cyano and .alpha.-(trifluoromethyl) vinyl ethers. Additivity of strongly activating and strongly deactivating substituent effects Fragmentation mechanism and energetics of some alkyl halide ions Mechanism of cobalt(III)-promoted hydrolysis of triphosphate ion Palladium-catalyzed cyclization of .omega.-olefinic tosamides. Synthesis of nonaromatic nitrogen heterocycles A reassessment of nitrobenzene valence bond structures Temperature regulated release of alkali metal salts from novel polymeric crown ether complexes Selectivity profile of the cation radical Diels-Alder reaction Foreshortened nucleotide analogs as potential base-pairing complements for lin-benzoadenosine Calixarenes. 6. Synthesis of a functionalizable calix[4]arene in a conformationally rigid cone conformation Benzannelated annulenes. 7. Toward the understanding of benzannelated annulenes: synthesis and properties of an [e]-ring monobenzannelated dihydropyrene Nortricyclylcarbinyl carbocations. Structural hybrides of cyclopropylcarbinyl and bridged 2-norbornyl carbocations Specific peptide sequences for metal ion coordination. 1. Solid-phase synthesis of cyclo-(Gly-His)3 Quantum mechanical studies of the photodissociation of oxyheme complexes Super-charged polycyclic .pi. systems: pyrene and perylene tetraanions Reaction of thiols with phenylglyoxal to give thiol esters of mandelic acid. II. Intramolecular general-base catalysis and change in rate-determining step Use of D-[13C6]glucose together with carbon-13-depleted glucose and homonuclear carbon-13 decoupling to identify the labeling pattern by this precursor of the "m-C7N" unit of geldanamycin Additions and Corrections - Classical Electrical Contributions to Solvent Polarity Scales Additions and Corrections - Nuclear Magnetic Resonance Investigation of the Spontaneous Decarboxylation of 2-Oxalopropionic Acid. 2. Species in Solution. Coordination modes of histidine. 3. Stereochemistry of copper(II) complexes related to pyridoxal catalysis Effects of pH on anionic inhibition of carbonic anhydrase activities Phosphine functionalized macrocycles. A new type of bridging ligand for the synthesis of heterometallic complexes Dependence of the yield of a radical-pair reaction in the solid state on orientation in a magnetic field Additions and Corrections - Thermal Rearrangement of an Allenic Diazoalkane and Intermolecular Capture of a Diazoethene by a Cyclopropene To Give a Common Dihydropyridazine Product Structure and reactivity of bicyclo[3.2.1]octa-2,6-dien-4-ylidene and bicyclo[3.2.1]oct-2-en-4-ylidene. Nucleophilicity of vinylcarbenes Silicon-directed Nazarov cyclization Additions and Corrections - Studies on Spin-Trapped Radicals in γ-Irradiated Aqueous Solutions of L-Alanylglycine and L-Alanyl-L-alanine by High-Performance Liquid Chromatography and ESR Spectroscopy Two-photon spectroscopy of all-trans-retinal. Nature of the low-lying singlet states Platinum metal surface chemistry of benzene and toluene An ESR study of olefin iron carbonyl radical anions A dinuclear rhodium complex with an octahedral rhodium(III) and a square-planar rhodium(I) center Thermal [1,3] sigmatropic rearrangements of 2,2-difluoro-1-vinylcyclopropanes Dehydrogenation processes on nickel and platinum surfaces. Conversion of cyclohexane, cyclohexene, and cyclohexadiene to benzene (Glutathiomethyl)glyoxal: mirror-image catalysis by glyoxalase I Dealkylation of zirconium(IV) by borane: the intimate mechanism of an alkyl transfer reaction Structure of the 2-hydroxyhomotropylium cation. Unequivocal evidence for homoaromatic delocalization ESR study of the attack of photolytically produced hydroxyl radicals on .alpha.-methyl-D-glucopyranoside in aqueous solution Intrastrand crosslinking of the guanines of the deoxytrinucleotide d(G-C-G) via cis-diammineplatinum dichloride Evidence by gel filtration at subzero temperatures for the covalent reaction intermediate of carboxypeptidase A in ester hydrolysis Masthead Defined dimensional alterations in enzyme substrates. Synthesis and enzymic evaluation of some lin-naphthopurines A new method for the identification of the origin of natural products. Quantitative deuterium NMR at the natural abundance level applied to the characterization of anetholes Dilithium semibullvalenide: an unusual organolithium compound extends the scope of homoaromaticity Crystal and molecular structure of 2,2,8,8,12,13,17,18-octamethylisobacteriochlorin Synthesis and x-ray structure of cis-tetracarbonyl[(Z)-(.eta.2-allylamino)(p-tolyl)carbene]tungsten(0), a stable metal-carbene-alkene complex Cryptand exchange kinetics Singlet-triplet reactivity of a .beta.,.gamma.-unsaturated ketone: mechanistic studies in photochemistry Benzidine rearrangements. 16. The use of heavy-atom kinetic isotope effects in solving the mechanism of the acid-catalyzed rearrangement of hydrazobenzene. The concerted pathway to benzidine and the nonconcerted pathway to diphenyline Benzannulated annulenes. 9. Toward the understanding of benzannulated annulenes: a simple correlation of the diatropicity of several benzannulated dihydropyrenes in terms of bond order deviations with predictions for other benzannulenes Anionic telomerization of acrylonitrile initiated by -CH2CN in the gas phase Additions and Corrections - Base Catalysis in a Photochemical Smiles Rearrangement. A Case of General Base Catalysis of a Photoreaction. Intramolecular oxidative cyclization reactions of trivalent phosphorus and carbonyl functions Long-range intervalence electron tunneling through fully saturated systems Reactions of bi(cyclophosphazenes) with sodium alkoxides or aryl oxides Photohydration of aromatic alkenes and alkynes Effect of buffer viscosity on the fluorescence of bilirubin bound to human serum albumin Liquid crystalline catalysis: reactivity induced by smectic solvents Electron transfer from nitrogen in microsomal oxidation of amine and amide. Simulation of microsomal oxidation by anodic oxidation Heats of formation of ionic and neutral enols of acetaldehyde and acetone Organophosphazenes. 15. Reactions of hexafluorocyclotriphosphazene with tert- and n-butyllithium reagents Coordination behavior of L-aspartic acid: ternary nickel(II) complexes with imidazoles. Crystal and molecular structure of (L-aspartate)tris(imidazole)nickel(II) Production of acrylonitrile and other unsaturated nitriles from alkenes and alkynes Characterization of the vapor species of dilithiomethane by flash vaporization mass spectroscopy and the Ziegler synthesis of dilithiomethane Electrogenerated chemiluminescence. 40. A chemiluminescent polymer based on the tris(4-vinyl-4'-methyl-2,2'-bipyridyl)ruthenium(II) system Electron exchange between bis(.eta.6-arene)chromium(I) and bis(.eta.6-arene)chromium(0). Comparisons between experimental and calculated kinetic parameters Benzannelated annulenes. 8. Toward the understanding of benzannelated annulenes: synthesis and properties of [a,h]- and [a,i]-ring dibenzannelated dihydropyrenes Total synthesis of (.+-.)-mycorrhizin A and (.+-.)-dechloromycorrhizin A A trimeric iron(III)heme-copper(II) complex: support for an alternate explanation of the "EPR silent" iron-copper pair in cytochrome c oxidase Additions and Corrections - 13C NMR Studies on Arsenic(III) and Antimony(III) Dihydroxydicarboxylate Complexes Book Reviews Photoelectrochemical cells based on amorphous hydrogenated silicon thin film electrodes and the behavior of photoconductor electrode materials Linear oligopeptides. 81. Solid-state and solution conformation of homooligo(.alpha.-aminoisobutyric acids) from tripeptide to pentapeptide: evidence for a 310 helix Decarbonylation of tetrahydrofuran-2-carboxylic acids and tetrahydropyran-2-carboxylic acids in concentrated sulfuric acid: formation of oxonium ions Quantum mechanical studies of the photodissociation of carbonylheme complexes EPR studies of the electronic structure and dynamic Jahn-Teller effect in iron(I) sandwich compounds Benzannelated annulenes. 6. Toward the understanding of benzannelated annulenes: synthesis and properties of [a]-ring monobenzannelated dihydropyrenes On the migration of a carboxyl group in a Wagner-Meerwein rearrangement in superacid solution: proof by double labeling with carbon-13. Abnormally high nucleophilicity of micellar-bound azide ion Systematic design of chemical oscillators. 10. Minimal bromate oscillator: bromate-bromide-catalyst

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