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Is Part Of	http://hub.abes.fr/acs/periodical/jacsat/1992/volume_114
has manifestation of work	http://hub.abes.fr/acs/periodical/jacsat/1992/volume_114/issue_12/m/print http://hub.abes.fr/acs/periodical/jacsat/1992/volume_114/issue_12/m/web
issue	12
is Is Part Of of	A route to artificial glycoconjugates and oligosaccharides via enzymically resolved glycals: dramatic effects of the handedness of the sugar domain upon the properties of an anthracycline drug Time-resolved circular dichroism of native oat phytochrome photointermediates Controlling solid-state reaction mechanisms using diffusion length in ultrathin-film superlattice composites Calculation of the relative binding free energy of three inhibitors of the photosynthetic reaction center of Rhodopseudomonas viridis using the molecular dynamics/free energy perturbation method Lyotropic liquid crystalline hyperbranched aromatic polyamides Book Reviews Contact ion pairs. Picosecond dynamics of solvent separation, internal return, and special salt effect Cyclopentadienylideneketene: theoretical consideration of an infrared spectrum frequently mistaken for that of benzyne Hydrothermal synthesis of K2PdSe10. Coexistence of two large interpenetrating three-dimensional frameworks of [Pd(Se4)2]2- and [Pd(Se6)2]2- Synthesis and structural characterization of a hybrid triazene-thiaborane cluster: (.mu.2(4,exo-9)-1-SiMe3-3-H-N3)-arachno-6-SB9H10 Carbon-13 NMR spectroscopic determination of the magnitude of the .beta.-silyl stabilization effect in 1-mesitylvinyl cations Effects of Gln102Arg and Cys97Gly mutations on the structural specificity and stereospecificity of the L-lactate dehydrogenase from Bacillus stearothermophilus The synthesis and structure of (.mu.-.eta.2,.eta.3-pentadienyl)(.mu.-alkanethiolato)pentacarbonyldiiron (Fe-Fe) complexes. An unusual bonding mode for the pentadienyl group A new approach to the study of the oxygenation reactions of transition-metal complexes. Formation of the .mu.-superoxo cobalt(III) complexes in the oxygenation reactions of cobalt(II) amines Platinum dimers bridged by diphenylphosphinocyclopentadienyl ligands. Molecular structures and NMR studies of two isomeric forms of the complexes [Pt2R2(.mu.-C5H4PPh2)2] Electron photodetachment from organophosphide ions. Electron affinities and substituent effects in organophosphines and their conjugate radicals Ligand effects on the blue copper site. Spectroscopic studies of an insulin-stabilized copper(II) chromophore incorporating an exogenous thiolate ligand Chiral molecular recognition in monolayers of diastereomeric N-acylamino acid methyl esters at the air/water interface Structure and dynamics of synthetic O-glycosylated cyclopeptide in solution determined by NMR spectroscopy and MD calculations Singlet-triplet separations measured by phosphorus-31 nuclear magnetic resonance spectroscopy. Applications to the molybdenum-molybdenum quadruple bond and to edge-sharing bioctahedral complexes Synthesis, characterization, and a proton NMR study of topologically chiral copper(I) [2]-catenates and achiral analogs Determination of an 8-.ANG. interatomic distance in a helical peptide by solid-state NMR spectroscopy Rational design of a highly efficient irreversible DNA interstrand cross-linking agent based on the pyrrolobenzodiazepine ring system Direct evidence of excited-state intramolecular proton transfer in 2'-hydroxychalcone and photooxygenation forming 3-hydroxyflavone Two-step spin crossover in the new dinuclear compound [Fe(bt)(NCS)2]2bpym, with bt = 2,2'-bi-2-thiazoline and bpym = 2,2'-bipyrimidine: experimental investigation and theoretical approach One-electron-reduction potentials of pyrimidine bases, nucleosides, and nucleotides in aqueous solution. Consequences for DNA redox chemistry Variable-energy photoelectron spectroscopic studies of hydrogen sulfide chemisorption on cuprous oxide and zinc oxide single-crystal surfaces: HS- bonding to copper(I) and zinc(II) sites related to catalytic poisoning Observation of hydroxyl protons of sucrose in aqueous solution: no evidence for persistent intramolecular hydrogen bonds A new type of bridging carbonyl ligand: .mu.3-.eta.2, and not one but two On the second-order polarizability of conjugated .pi.-electron molecules with octupolar symmetry: the case of triaminotrinitrobenzene Computer Software Reviews Dimeric substituted copper phthalocyanine liquid crystals. Synthesis, characterization and magnetic properties Photophysics of entwined porphyrin conjugates: competitive exciton annihilation, energy-transfer, electron-transfer, and superexchange processes Synthetic replicators and extrabiotic chemistry Contribution of charged side chains, magnesium(2+), and solvent exclusion to enzymic .beta.-decarboxylation of .alpha.-keto acids Empirical force field models for the transition states of intramolecular Diels-Alder reactions based upon ab initio transition structures Quantized adhesion detected with the atomic force microscope Chemically induced modification of cofactor specificity of glucose-6-phosphate dehydrogenase Hoogsteen versus reversed-Hoogsteen base pairing: DNA triple helixes Synthetic, structural, and mechanistic studies of the carbon-hydrogen bond activation of phenols by tungsten complexes W(PMe3)6 and W(PMe3)4(.eta.2-CH2PMe2)H Geometry optimization through second-moment scaling Influence of strain on chemical reactivity. Relative reactivity of torsionally strained double bonds in 1,3-dipolar cycloadditions Laser flash photolysis of arylsulfonium salts: studies of photoproduced proton kinetics and mechanism in polar solvents by a pH-jump method Symmetrical and unsymmetrical quadruply aza bridged closely interspaced cofacial bis(5,10,15,20-tetraphenylporphyrins). 3. Interplanar distances, proton NMR chemical shifts, and the catalysis of the electrochemical reduction of oxygen Stereoselective hydrogen-transfer reactions involving acyclic radicals. A study of radical conformations using semiempirical calculations Minor groove binding of [Ru(phen)3]2+ to [d(CGCGATCGCG)]2 evidenced by two-dimensional NMR Time-resolved absorption studies of native etiolated oat phytochrome Organic template-directed inorganic crystallization: oriented nucleation of barium sulfate under compressed Langmuir monolayers Theoretical study of the low-lying triplet and singlet states of diradicals. 1. Tetramethyleneethane Excited-state photoreactions of chlorine dioxide in water Theoretical study of the low-lying triplet and singlet states of diradicals. 2. Cyclopentadienyltrimethylenemethane Silaheterocycles. 16. [1,3]-Sigmatropic migration of an alkoxy group: dichlorosilene to dimethylsilene rearrangement Isotopic labeling investigation of the oxygenation of nickel-bound thiolates by molecular oxygen Gas-phase basicities of .beta.-lactams and azetidines. Cyclization effects. An experimental and theoretical study Theoretical calculations on 1,2-ethanediol. 2. Equilibrium of the gauche conformers with and without an intramolecular hydrogen bond in aqueous solution Stereochemical studies of Ziegler-Natta alkene insertion through intramolecular formation of dimethylcyclohexanes Free energy perturbation studies on inhibitor binding to HIV-1 proteinase Endoperoxide formation of helianthrene with triplet molecular oxygen. A spin-forbidden reaction Nickel(II) ion-support interactions as a function of preparation method of silica-supported nickel materials Effects of covalent modifications on the solid-state folding and packing of N-malonylglycine derivatives Solid-state NMR studies of hydrated porous aluminophosphate VPI-5 Synthesis and structure of a tetrasilacyclohexyne Poly(germanium enolate): a new class of polymer having a germanium enolate structure in the main chain Masthead Photoinduced electron-transfer carbon-carbon bond cleavage of radical cations of carbonyl compounds in solution. 2,4,6-Triphenylpyrylium salt-sensitized oxygenation of aralkyl ketones and aldehydes Geometrical aspects of the activation of ketones by Lewis acids Extraframework sodium cation sites in sodium zeolite Y probed by sodium-23 double-rotation NMR Chemical reactions in liquid crystalline solvents: anti-Arrhenius behavior as a consequence of nematic-smectic A-reentrant nematic phase transitions Cyclopropylcarbinyl ring opening as mechanistic probe for differentiation between the singlet and triplet spin states of trimethylenemethane diradicals (non-Kekule species) Preparation and reactivity of a cationic dichromium-semiquinone complex Molecular dissimilarity: a momentum-space criterion Ab initio configuration interaction study of the metal-metal coupling in some zirconium(III) and titanium(III) dimers. Evidence for a superlong Zr-Zr bond in [Cp2Zr(.mu.-PR2)]2 and related complexes Size and location of cobalt clusters in zeolite NaY: a nuclear magnetic resonance study On the dimensionality of the reaction coordinate of intramolecular charge-transfer reactions in protic solvents Symmetrical and unsymmetrical quadruply aza-bridged, closely interspaced, cofacial bis(5,10,15,20-tetraphenylporphyrin)s. 2. Synthesis, characterization, and conformational effects of solvents Neighboring tin effect in electron transfer from thio ethers Formation of 3-amino-5-hydroxybenzoic acid, the precursor of mC7N units in ansamycin antibiotics, by a new variant of the shikimate pathway The anion radical of bicyclononatriene Photolysis and thermolysis of a tetracyclic bis-azoalkane: nitrogen extrusion induced by .beta. cleavage Control over the relative stereochemistry at C4 and C5 of 4,5-dihydrooxepins through the Cope rearrangement of 2,3-divinyl epoxides and a conformational analysis of this ring system Conformation of cyclic analogs of substance P: NMR and molecular dynamics in dimethyl sulfoxide Ordered oxygen on molybdenum(112): modification of surface electronic structure and control of reaction path Synthesis and reactivity of oxovanadium(V) trialkoxides of bulky and chiral alcohols Absolute kinetics of hydrogen abstraction from .alpha.-tocopherol by several reactive species including an alkyl radical Silver(I)-modified base pairs involving complementary (G, C) [guanine, cytosine] and noncomplementary (A, C) [adenine, cytosine] nucleobases. On the possible structural role of aqua ligands in metal-modified nucleobase pairs Dynamics of proton transfer from cation radicals. Kinetic and thermodynamic acidities of cation radicals of NADH analogs Stereochemically active or inactive lone pair electrons in some six-coordinate, group 15 halides Synthesis of monodispersed high molecular weight polymers and isolation of an organolanthanide(III) intermediate coordinated by a penultimate poly(MMA) unit Correction. Ab Initio Calculations Predict a Singlet Ground State for Tetramethyleneethane Site-specific adduct formation in oligomeric DNA using a new protecting group Backbone dynamics of calbindin D9k: comparison of molecular dynamics simulations and nitrogen-15 NMR relaxation measurements Striking example of a contact chloride ion pair with bridging water molecules in the solid state Diastereoselection and in vivo inhibition of 3-dehydroquinate synthase Ab initio study of vibrationally preferred deuteration sites in the cyclopropane-d2 radical cation

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