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Is Part Of	http://hub.abes.fr/acs/periodical/jacsat/1990/volume_112
has manifestation of work	http://hub.abes.fr/acs/periodical/jacsat/1990/volume_112/issue_23/m/print http://hub.abes.fr/acs/periodical/jacsat/1990/volume_112/issue_23/m/web
issue	23
is Is Part Of of	Efficient implementation of the gauge-independent atomic orbital method for NMR chemical shift calculations Kinetic behavior of tetrachlorocyclopentadienyl-type anions. Deprotonation of 1,2,3,4-tetrachloro-1,3-cyclopentadiene and nucleophilic addition to 1,2,3,4-tetrachloro-6-phenylfulvene in 50% Me2SO/50% water Additivity methods in molecular polarizability One-step construction of fused tricyclic and tetracyclic structures from acyclic precursors via cyclic carbopalladation X-ray crystal structure analysis of (N-isopropylbenzamide)lithium tetrahydrofuran: an aza analogous ketone lithium enolate Absolute rate constants for the gas-phase silicon-hydrogen insertion reactions of dimethylsilylene with silane and the methylsilanes in the temperature range 300-600 K Synthesis of 4-alkyl-4-(4-methoxyphenyl)cyclohex-2-en-1-ones and 5-alkyl-5-phenyl-1,3-cyclohexadienes from bis(tricarbonylchromium)-coordinated biphenyls Host properties of cyclodextrins towards anion constituents of antigenic determinants. A thermodynamic study in water and in N,N-dimethylformamide Tandem anionic [3,3] sigmatropy and SN' displacement. New synthetic technology for the construction of hydroazulenone and related frameworks Stability of platinated oligonucleotide duplexes containing a base pair mismatch at the site complementary to the platination site Chemisorption and diffusion of atomic hydrogen in and on cluster models of palladium, rhodium and bimetallic palladium tin, rhodium tin, and rhodium zinc catalysts A molybdenum-95 solid-state NMR study of hydrodesulfurization catalysts. 1. Formation of fresh HDS catalyst precursors by adsorption of polyoxomolybdates onto .gamma.-alumina Redox catalysis involving substrate photooxidation with catalyst regeneration by substrate reduction. Simultaneous oxidative C-H bond cleavage and reductive C-S bond cleavage in thioethers catalyzed by polyoxotungstate, W10O324- Photoinduced through-bond electron transfer: remote activation of unique aroyl azide reactivity A conformationally rigid acyclic molecule Use of alkyl substitution to control ring size in the intramolecular ionic Diels-Alder reaction An affinity label of absolute peptidic origin Hydrogen bonding in a family of triamides: conformation-directing effects in solution versus the solid state Book Reviews Total synthesis of (.+-.)-dactylol and related studies Selenium-77 NMR and crystallographic studies of selenazofurin and its 5-amino derivative Molecular mechanics calculations (MM3) on aliphatic amines The total synthesis of (.+-.)-epi-jatrophone and (.+-.)-jatrophone using palladium-catalyzed carbonylative coupling of vinyl triflates with vinyl stannanes as the macrocycle-forming step Nucleophilic activation of triruthenium carbonyl complexes by semi-labile ancillary ligands. Cluster assisted codimerization of alkynes and ethylene to give 1,2-disubstituted-1,3-butadienes Synthesis of 2-(alkanoyloxy)-5-alkoxytropones. Novel monocyclic rod-type liquid crystals Polyisocyanides: electronic or steric reasons for their presumed helical structure? Hydrogen bond-directed cocrystallization and molecular recognition properties of diarylureas Substituent effects on the geometries and energies of the silicon-silicon double bond Synthesis and reactivity of Cp2Ta(CH2)2Ir(CO)2: an early-late heterobimetallic complex that catalytically hydrogenates, isomerizes and hydrosilates alkenes A stepwise mechanism for the formation of 2.pi. + 4.pi. cycloadducts in the ionic Diels-Alder reaction The 2-pyridone dimer, a model cis peptide. Gas-phase structure from high-resolution laser spectroscopy Photoluminescence-based correlation of semiconductor electric field thickness with adsorbate Hammett substituent constants. Adsorption of aniline derivatives onto cadmium selenide Modulation by organic cosolvent of microscopic compositions of virtual transition states in the acylation stage of cholesterol esterase catalyzed hydrolysis of short-chain p-nitrophenyl esters Hydrogen exchange during the enzyme-catalyzed isomerization of isopentenyl diphosphate and dimethylallyl diphosphate Determination of the conformational preferences of adenosine at the active site of adenosine deaminase NMR study of heme pocket polarity/hydrophobicity of myoglobin using polypropionate-substituted hemins Living ring-opening metathesis polymerization of 2,3-difunctionalized norbornadienes by Mo(:CHBu-tert)(:NC6H3Pr-iso2-2,6)(OBu-tert)2 Convergent functional groups. VIII. Flexible model receptors for adenine derivatives Synthesis of simple CrL4(alkyne) complexes by displacement of a labile cyclooctadiene ligand Template-directed phenolic oxidative coupling. A stereocontrolled route to spiro dienones X-ray structure analyses and vibrational spectral measurements of the model compounds of the liquid-crystalline arylate polymers. Finding out the Raman bands characteristic of the twisted biphenyl structure in association with the solid-to-liquid crystalline phase transition Molecular sequence effect on the carbon-13 carbonyl chemical shift shielding tensor Calculation of the molecular polarizability tensor Observation of an isotope effect in the chorismate synthase reaction An unusual, electronically unsaturated dirhenium polyhydride complex with no metal-metal bond Carbon monoxide dependent solid-state electrochemistry of ferrocenylferraazetine: en route to a molecule-based carbon monoxide sensor Proton-coupled electron-transfer reactions. Mechanisms of two-electron reduction of trans-dioxoruthenium(VI) to trans-aquooxoruthenium(IV) and disproportionation of trans-dioxoruthenium(V) [Erratum to document cited in CA113(2):12705y] Detection of alkyl, alkoxyl, and alkyperoxyl radicals from the thermolysis of azobis(isobutyronitrile) by ESR/spin trapping. Evidence for double spin adducts from liquid-phase chromatography and mass spectroscopy Oxygen-18 exchange accompanying the basic hydrolysis of primary, secondary, and tertiary toluamides. 2. The importance of amine leaving abilities from the anionic tetrahedral intermediate Formation and characterization of an 84 electron hexaruthenium cluster: spontaneous decarbonylation of H2Ru6(CO)18 to form H2Ru6(CO)17 Evidence for the existence of unsaturated organoaluminum molecules in the gas phase: AlCH2, Al(CH3)x (x = 1, 2), and AlC2H4 Effect of allylic substituents on the face selectivity of Diels-Alder reactions of semicyclic dienes Enzymatic synthesis of phosphotyrosine-containing peptides via adenylated intermediates Power- and structure-variable fluorinating agents. The N-fluoropyridinium salt system Carbene rearrangements. Part 36. Intramolecular reactions of diazocyclobutanes. Synthesis of trans-tricyclo[5.1.0.01,4]octane [[3.5.4]fenestrane]. A novel synthetic route to scandium porphyrin derivatives and the first structurally characterized metalloporphyrin-.eta.5-cyclopentadienyl sandwich compound Masthead Comparative reactivity of isoelectronic nitrido, methylimido, and oxo complexes of osmium(VI) The pyridine-chlorine atom 3-electron-bond intermediate Computer Software Reviews Laser photochemistry of DNA: two-photon absorption and optical breakdown using high-intensity, 532-nm radiation New synthetic route to unsymmetrically substituted pentacoordinated phosphorus. Hydrolytically stable chiral, monocyclic oxyphosphoranes Carbon-oxygen bond scission in heterometallic alkoxides: formation and structure of K4Zr2O(OCHMe2)10 Redox properties of porphycenes and metalloporphycenes as compared with porphyrins Structure and energetics of C2H4Br+: ethylenebromonium ion vs. bromoethyl cations Ring-strain-modified properties of substituted perylene radical cation salts. A solid-state carbon-13 CPMAS NMR study A molecular mechanics force field (MM3) for alcohols and ethers Syntheses and spectroscopic characterization of (T(p-Me2N)F4PP)H2 and (T(p-Me2N)F4PP)M where T(p-Me2N)F4PP = the dianion of meso-tetrakis(o,o,m,m-tetrafluoro-p-(dimethylamino)phenyl)porphyrin and M = cobalt(II), copper(II), or nickel(II). Structures of (T(p-Me2N)F4PP)Co and meso-tetrakis(pentafluorophenyl)porphinatocobalt(II), (TF5PP)Co Stereoselective thermal rearrangement of syn-7-(1,2-butadienyl)-1-methylbicyclo[2.2.1]hept-2-ene [syn-7-(3-methylallenyl)-1-methylnorbornene] A kinetic method for the measurement of the pKR value of the triphenylmethyl cation in the aqueous standard state Cascade molecules. Part 6. Synthesis and characterization of two-directional cascade molecules and formation of aqueous gels Concurrent oxygen-18 exchange accompanying the acid-catalyzed hydrolysis of anilides. Implications for the lifetimes of reversibly formed intermediates Triply-bridging trifluorophosphine. Formation of [(.mu.3-F3P)Pd3(Ph2PCH2PPh2)3(.mu.-Cl)]+ by disproportionation of Pd2(.mu.-Ph2PCH2PPh2)2Cl2 3D Heteronuclear NMR techniques for carbon-13 in natural abundance Discovery of a new fragmentation reaction Synthesis and x-ray crystal structure of a highly strained anti-Bredt olefin/anti-Bredt lactam. exo-2-Carbomethoxy-1-aza-8-oxobicyclo[3.3.1]non-4-ene Thermochemistry of silane substitution of CO in metal carbonyl complexes. Interaction of silanes with metal centers Cluster of clusters: a modular approach to large metal clusters. Structural characterization of a 38-atom cluster [(p-Tol3P)12Au18Ag20Cl14] based on vertex-sharing triicosahedra 1,2,3-cyclohexatriene and cyclohexen-3-yne: two new highly strained C6H6 isomers Cross-bridged cyclam. Protonation and lithium cation (Li+) complexation in a diamond-lattice cleft GDP and GTP association equilibria. Use of manganous ion-induced paramagnetic relaxation rates to study hydrogen-bonded species Dependence of transition-state structure on acyl chain length for cholesterol esterase-catalyzed hydrolysis of lipid p-nitrophenyl esters Synthesis and reactions of a new rhenium(V) oxo hydrido complex. Transfer of both oxygen and hydrogen to carbon monoxide Characterization of the first .eta.4-vinylketene metal complex from the reaction of a Group 6 Fischer carbene complex and an alkyne Photophysical investigation of starburst dendrimers and their interactions with anionic and cationic surfactants Mixed aggregates: crystal structures of a lithium ketone enolate/lithium amide and of a sodium ester enolate/sodium amide Stannylquinones. Synthesis and utilization as quinone carbanion synthetic equivalents Insertion of (.eta.5-indeny)cobalt(I) into cyclobutenones: the first synthesis of phenols from isolated vinylketene complexes Nitrogenase substrates as intercluster bridging units between the molybdenum atoms in doubly bridged, double cubanes. The synthesis and characterization of the [MoFe3S4Cl2(Cl4cat)]2(.mu.2-S)(.mu.2-L)]n- anions (L = N2H4, n = 4; L = CN-, n = 5) Photon 2D nuclear magnetic resonance of an oligonucleotide phosphorodithioate d(CGCTpS2-TpS2-AAGCG). An unusual hairpin loop structure

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