FORMATION OF A MU-4-METHANEDITHIOLATE BY TRANSFER OF 2 H-ATOMS FROM RE TO A CS2 MOLECULE - SYNTHESIS AND CRYSTAL-STRUCTURE OF [(RE2(MU-H)(CO)8)2(MU-4-S2CH2)]

Citation
T. Beringhelli et al., FORMATION OF A MU-4-METHANEDITHIOLATE BY TRANSFER OF 2 H-ATOMS FROM RE TO A CS2 MOLECULE - SYNTHESIS AND CRYSTAL-STRUCTURE OF [(RE2(MU-H)(CO)8)2(MU-4-S2CH2)], Journal of the Chemical Society. Dalton transactions, (7), 1993, pp. 1101-1105
Citations number
36
ISSN journal
03009246
Issue
7
Year of publication
1993
Pages
1101 - 1105
Database
ISI
SICI code
0300-9246(1993):7<1101:FOAMBT>2.0.ZU;2-R
Abstract
The reaction of the unsaturated dinuclear molecule [Re2(mu-H)2(CO)8] w ith CS2 affords in good yield the complex [{Re2(mu-H)(CO)8}2(mu4-S2CH2 )], containing a methanedithiolate H2CS2 fragment originated by the tr ansfer of two hydrides, presumably one from each metal complex, to CS2 . The molecule has been characterized spectroscopically and by single- crystal X-ray diffraction analysis. The crystals are monoclinic, space group P2(1)/c, with a = 13.559(1), b = 12.502(1), c = 16.718(1) angst rom, beta = 99.26(1)-degrees. The structure was refined on the basis o f 2689 significant reflections to a final R value of 0.026. The molecu le consists of two Re2(mu-H)(CO)8 units linked by a methanedithiolate ligand. Each sulfur atom bridges two Re atoms belonging to the same di nuclear moiety. The overall idealized symmetry of the molecule is C2. The average Re-Re and Re-S bond lengths are 3.089 and 2.475 angstrom, respectively.