Synthesis and vibrational (IR and Raman) spectroscopic study of triangular thio-complexes [Mo3S13]2− containing 92Mo, 100Mo and 34S isotopes
1989; Elsevier BV; Volume: 8; Issue: 20 Linguagem: Inglês
10.1016/s0277-5387(89)80005-1
ISSN1873-3719
AutoresVladimir P. Fedin, Boris A. Kolesov, Yuri V. Mironov, В.Е. Федоров,
Tópico(s)Metalloenzymes and iron-sulfur proteins
ResumoThe triangular anionic thio-complex [Mo3S13]2− has been obtained by the reaction of the triangular molybdenum thiobromide Mo3S7Br4 with an aqueous solution of Sx2−. Starting from compounds containing 92Mo, 100Mo and 34S isotopes, the following thio-complexes have been obtained: [92Mo3S13]2−, [100Mo3S13]2−, [Mo334S13]2-, [Mo3(μ3-S)(μ2-S34S)3(34S2)3]2− and [Mo3(μ3-34S)(μ2-34SS)3(S2)3]2−. Along with the nucleophilic substitution of the Br ligands by the terminal S2 ligands, elimination—addition of sulphur in μ2-S2 ligands also takes place. This allows preparation of thio-complexes containing μ2-34S32S ligands. IR and Raman spectra of the thio-complexes have been studied, normal vibrations have been calculated and the bond force constants determined.
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