Mono-oxo bis(dithiolene) Mo(IV)/W(IV) complexes as building blocks for sulfide bridged bi- and tri-nuclear complexes

A new electron, six-electron, sulfide-bicapped trinuclear [Mo.sup.IV] cluster containing all sulfur coordination where each Mo atom is seven coordinated and retains the oxidation state of +14 is described. The formation of a binuclear tungsten(V) complex under identical reaction conditions with one electron oxidation of each [W.sup.IV] center and the redox chemistry of these complexes are rationalized.