New dinuclear thiobenzoato complexes of molybdenum(V) containing Mo2O2S2 core. X-ray crystal structures of [Mo2O2S2(OSCC6H5)(2)(py)(2)] and [Mo2O2S2(OSCC6H5)(2)(gamma-pic)(2)]center dot 2H(2)O

摘要

The [Mo2O2S2(OSCC6H5)(2)] (1) has been prepared either by the reaction of [Mo2O3(C5H7O2)(4)] or of [Mo4Cl2O6(O2CCH3)(6)].(CH3CO)(2)O with thiobenzoic acid. The product was then used to prepare two complexes of the general formula [Mo2O2S2(OSCC6H5)(2)L-2] (where L = pyridine (2) or gamma-picoline (3)). All complexes were characterized by elemental analyses, IR spectra and magnetic measurements. The structures of (2) and (3) were proved by X-ray structure analysis. Both complexes are dinuclear containing Mo2O2S2 core with two Mo atoms linked by a Mo-Mo single bond. The Mo atoms are octahedrally coordinated by ore-oxygen, two bridging sulfido-sulfurs, one pyridine (or gamma-picoline)-nitrogen and thiobenzoato-sulfur and thiobenzoato-oxygen atoms. (C) 1998 Elsevier Science Ltd. All rights reserved. [References: 27]