Synthesis, crystal and molecular structure, spectroscopic and electrochemical studies of trichloro-oxo(4,6-dimethylpyrimidine-2(1H)-thione)(triphenylphosphine oxide)rhenium(V) complex

Reaction of 4,6-dimethylpyrimidine-2(1H)-thione (Me(2)pymSH) with mer-[ReOC l3(Me2S)(OPPh3)] synthon in 1:1 molar ratio in refluxing acetone, results i n the replacement of the Me2S ligand to form the mer-[ReoCl(3)(Me(2)pymSH)( OPPh3)] species, X-ray diffraction shows that the structure of the title co mpound consists of monomeric units with a distorted octahedral coordination around the rhenium(V) centre which includes the axial Re=O and Re-OPPh3 bo nds, and in which three Cl- ions and a S-monodentate neutral Me(2)pymSH lig and act as equatorial ligands. The compound was also characterised using el ectrochemical measurements and UV-Vis-NIR and IR spectroscopy. (C) 2001 Els evier Science B.V. All rights reserved.