Synthesis and characterization of molybdenum(VI)-dioxo complexes containing both coordinated thiolate and carboxylate groups. Reactions with their own free ligands

Article abstract of DOI:10.1016/S0020-1693(97)05725-3

The synthesis, characterization and spectroscopic properties of a group of Mo(VI) complexes having thiocarboxylate ligands of type [Mo^VIO₂(O₂CC(S)MePh-X)₂] ^2- have been reported (X = H, p-Me, p-Cl). The peak potential for the Mo(VI) reduction increases according to the electron-donor ability of X (Me > H > Cl). Reaction of these Mo(VI) complexes with their own free ligands has been studied by ESR and UV-Vis spectroscopy, yielding the monomeric [Mo^VO(O₂CC(S)MePh-X)₂]^- as unique complex products. The kinetic study of this oxidation reaction has also been investigated.