The reaction of the unsaturated dinuclear molecule [Re2(μ-H)2(CO)8] with CS2 affords in good yield the complex [Re2(μ-H)(CO)82(μ4-S 2CH2)], containing a methanedithiolate H2CS2 fragment originated by the transfer 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 P21/c, with a = 13.559(1), b = 12.502(1), c = 16.718(1) Å, β = 99.26(1)°. The structure was refined on the basis of 2689 significant reflections to a final R value of 0.026. The molecule consists of two Re2(μ-H)(CO)8 units linked by a methanedithiolate ligand. Each sulfur atom bridges two Re atoms belonging to the same dinuclear 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 Å, respectively.
|Titolo:||Formation of a μ4-methanedithiolate by transfer of two H atoms from Re to a CS2 molecule. Synthesis and crystal structure of [Re2(μ-H)(CO)82(μ4-S 2CH2)]|
BERINGHELLI, TIZIANA (Primo)
D'ALFONSO, GIUSEPPE (Secondo)
SIRONI, ANGELO AGOSTINO DANIELE (Ultimo)
|Settore Scientifico Disciplinare:||Settore CHIM/03 - Chimica Generale e Inorganica|
|Data di pubblicazione:||1993|
|Appare nelle tipologie:||01 - Articolo su periodico|