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The infrared study of trimethylantimony(V) derivatives containing Sb-O bonds

1966; Elsevier BV; Volume: 5; Issue: 6 Linguagem: Inglês

10.1016/s0022-328x(00)85157-8

1872-8561

M. Shindo, Rokuro Okawara,

Chemical Thermodynamics and Molecular Structure

Some trimethyl-substituted antimony(V) compounds containing Sb-O bonds such as trimethylantimony dicarboxylates, dinitrate or oxybis(trimethylantimony) dinitrate, were prepared. From the infrared spectroscopic investigation, both in the solid and in solution, and cryoscopic molecular weight determinations in benzene, the following results were obtained. (1) (CH3)3SbX2 (where X is OCOR or NO3) has a trigonal bipyramidal configuration with the C3Sb group in the same plane and X at the apices. (2) The Sb-O bond in (CH3)3SbX2 (where X is OCOR or NO3) is covalent in nature while the Sb-O bond in oxybis(trimethylantimony) dinitrate is intermediate in character between covalent and ionic bonds.