ISSN:
0377-0486
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Infrared and Raman spectra have been recorded at various temperatures for the solld gold (I) and gold (III) coordination compounds (CH3)2 SAuX (X = Cl, Br), (CH3)2 SAuCl3 and their perdeuteriated derlvatives. Vibrational assignments are proposed for the observed bands on the basis of modified Urey-Bradley force field calculations. The primary force constants, K(Au-X) and K(Au-S), are essentially independent of the oxidation state of the gold atom. The data also show that (CH3)2S and (CH3)3P have similar trans-directing influences in the ground state. The signs of the interaction constants in the square-planar species, together with the slightly larger trans-to-sulfur Au-Cl stretching force constant in comparison with the corresponding cis value, suggest that the trans-to-sulfur Au-Cl bond is stabilized relative to the cis Au-Cl bonds by the presence of the (CH3)2S ligand.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jrs.1250150505
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