Now showing items 21-30 of 67
Hydroxylation and expoxidation reactions catalyzed by synthetic metalloporphyrinates. Models related to the active oxygen species of cytochrome P-450
(Elsevier, 1980-02)
Iodosylbenzene has been found to react with catalytic amounts of synthetic metalloporphyrinates to give epoxides and alcohols from olefins and alkanes. Tetraphenylporphinatoiron(III) chloride (TPPFeCl) catalyzed the ...
Electron correlation and Hund's rule
(John Wiley & Sons, Inc., 1980-10)
It is suggested that simple electronic shielding effects induced by wave function antisymmetrization tend to govern the energy ordering of singlet and triplet terms within a two-electron atomic configuration. This approach ...
Structure of tri-tert-butylsilane by electron diffraction and molecular mechanics
(Elsevier, 1980-04)
A model force field for silanes is constructed by extending the model field MUB-2 to include silicon, for the following purposes: the calculation, via normal coordinate analyses, of amplitudes of vibration and shrinkage ...
The reaction of chlorotetrafluorophosphorane with trimethylamine
(Elsevier, 1980)
The reaction of chlorotetrafluorophosphorane with trimethylamine affords a 1:1 Lewis acid-base complex of composition ClF4P[middle dot]NMe3. It has been established by 1H and 19F NMR spectroscopy that the Cl and Me3N ligands ...
Mechanism of cholesterol gallstone dissolution. I. The determination of the binding of alkyl amines to bile micelles using dynamic membrane transport methods
(Elsevier, 1980-03)
Recent studies have shown that cholesterol monohydrate pellet dissolution rates in real and synthetic bile systems are enhanced dramatically in the presence of small concentrations of amines (primary, secondary, and ...
The novel synthesis of a [6:5:6] linear isoguanosine type tricyclic nucleoside using carbonyl sulfide
(Elsevier, 1980)
The novel one-step synthesis of a fused pyrimidin-2-one-4-thione derivative from an -aminonitrile using carbonyl sulfide is described.
Mechanism of cholesterol gallstone dissolution. III. Electrophoretic studies showing the correlation between the bile micellarcharge and the effect of alkyl amines as cholesterol gallstone dissolution rate accelerators
(Elsevier, 1980-03)
We have shown that the cholesterol monohydrate dissolution rate acceleration in chenodeoxycholic acid solutions due to the addition of hexylamine and octylamine may be directly related to their ability to bind to the ...
Module for rapid normal and inverse normal pulse polarography: application to study of adsorption
(Elsevier, 1980-01-25)
Construction and utilization of a module for interfacing with a rapid response potentiostat are described, which permits use of normal pulse polarography (NPP) and inverse normal pulse polarography (INPP). In trace analysis ...
Field-dispersion profiles of the proton spin-lattice relaxation rate in chloroplast suspensions. Effect of manganese extraction by EDTA, Tris, and hydroxylamine
(Elsevier, 1980-08-05)
Proton spin-lattice relaxation rates (R1) have been measured in a variety of dark-adapted chloroplast suspensions over a range of field strengths between 1 and 15 kG (4-5 MHz). When the effects of EDTA or Tris washing on ...