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A structural characterization of polypyrazolylborato and tetraphenyl compounds
(1976)
A series of polypyrazolylborato and tetraphenyl compounds have been studied by x-ray crystallography. The structure of (diphenyldipyrazolylborato) (2-methylallyl) (dicarbonylmolybdenum) has been determined. The molybdenum ...
An infrared and Raman study of some selected cyclic and bicyclic molecules
(1976)
The conformations of several cyclic and bicyclic molecules were investigated through interpretation of their infrared and Raman spectra. The molecular systems included cyclopentene and three deuterated derivatives, a series ...
Investigations of the mechanistic details and potential synthetic applications of the di-[pi]-methane rearrangement
(1978)
The di-π-methane rearrangement has been shown to be of very general scope. During the course of a study designed to broaden the scope of this rearrangement by including a nitrogen atom in the backbone of the di-π-methane ...
Preparation and structural characterization of Re[subscript]2[superscript]n+ compounds containing sulfato, amidino, phosphine and methyl ligands
(1976)
Four new complexes containing the quadruply bonded Re₂ (superscript n+) unit have been synthesized and the structure of each has been determined by X-ray crystallographic methods. The first compound, Na₂Re₂(SO)₄)₄, was ...
Investigation of the O₂̄[subscript n] + O₂ = O₂̄[subscript n]₊₂ equilibria from 77 ̊K to 373 ̊K
(1978)
The ion-molecule reactions O₂+O ⁻₂n = O ⁻₂n ₊₂, n=1-5, were studied in the pressure range of 1.5 to 12.0 torr and a temperature range of 77 to 373° K. The reactions occurred in a stream of partially ionized oxygen gas. ...
Pathways for intramolecular carbonyl exchange in some metal carbonyl complexes
(1978)
The intramolecular carbonyl exchange processes which occur in metal carbonyl complexes of the cyclic polyenes, azulene, guaiazulene, and 7-H-indene have been examined by carbon-13 NMR spectroscopy. These polyenes form ...
A comparison of feedback systems affecting achievement in mastery learning
(1976)
The purpose of this investigation was to determine the influence of different remediation strategies on student retention of cognitive achievement. Fifty-three students were randomly assigned to three treatment groups ...
Protein crystallography : new approaches to X-ray data collection, direct space refinement and model building
(1977)
This crystallographic study was designed to develop and test efficient techniques of X-ray data collection, phase extension and refinement, and model building capable of giving a reliable description of macromolecules in ...
Cosmic ray produced noble gases in mesosiderite meteorites
(1977)
Mass spectrometric analyses of the noble gas isotopes were performed on the mesosiderites, Clover Springs, Crab Orchard, Patwar, and Hainholtz with comparative analyses also conducted on the achondrites, Binda and Pavlovka. ...