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Biosynthetic studies on vitamin B₁₂
(1987)
The role of folates in the enzymatic formation of the porphyrin macrocycles was investigated. Uroporphyrinogen III cosynthetase-free hydroxymethylbilane synthase from Rhodopseudomonas spheroides was incubated with the ...
Studies in enzymatic peptide synthesis
(1988)
Chapter I. The incorporation of D-amino acids into peptides via kinetic approach enzymatic peptide synthesis is examined. D-amino acid esters were found to be fairly efficient acyl-acceptors under conditions of high organic ...
Structure and dynamics of functionalized polyethylene surfaces
(1989)
We have used spectroscopically labeled polyethylene films to investigate the effects of solvent upon the reactivity, mobility and accessibility of functional groups at the polyethylene-solvent interface. These results ...
The effect of translational energy on trapping and detection in fourier transform ion cyclotron resonance mass spectrometry
(1989)
Fourier transform ion cyclotron resonance (FT-ICR) is the observation of an image current induced by a well defined ion packet, consequently the high resolution and high sensitivity arise from the ability to produce coherent ...
Formation, characterization, and reactivity of metal-oxygen adducts of copper, silver, and gold
(1989)
The coinage metals are oxidised to their respective cations (Cu+, Ag+, and Au+) at potentials that range from -0.20 V vs SCE for Cu to +1.30 V for Au. At glassy carbon hydroxide ion (-OH) is oxidized to O (+0.35 V vs SCE) ...
Molecular structures by theoretical means : applications to metal ion monohydrates, quadruply bonded dichromium(II) complexes, and carbonyl labilization in ligand substitution reactions
(1988)
Ab initio Hartree-Fock-Roothaan self-consistent-field (HFR-SCF) and generalized valence bond (GVB) geometry optimizations are used to study problems that are inaccessible to experiment. The theoretically determined molecular ...
The oxidative dehydrogenation of ethane : gas-phase and catalytic
(1988)
The gas-phase and the catalytic oxidative dehydrogenation of ethane were studied. Lithium-promoted magnesium oxide was investigated as the catalyst. In the gas-phase oxidation study a perfectly mixed tubular reactor was ...
Ziegler-Natta catalyzed polymerization kinetics : origin of the molecular weight distribution
(1986)
The molecular weight distributions generated by Ziegler-Natta catalyzed polymerizations are examined. Only those catalysts with one type of catalytic species are considered. From the rate laws for propagation and elimination, ...
The isomerization of gold(I) ylide dimers and the preparation and structure of the gold(II) ylide dimers containing ligands coordinated through sulfur
(1987)
The preparation of the asymmetric gold dimer, 2, [Au(CH₂)₂P(C₆H₅)(CH₃)]₂, was carried out using Li[C₆H₅)(CH₃)P(CH₂)₂] and (C₆H₅)₃PAuCl. The trans isomer was isolated as the predominant product. Isomerization of trans-2 to ...