Reversible Sulfurization–Desulfurization of Tungsten Bis(dithiolene) Complexes

Abstract

Easy come, easy go: Tungsten bis(dithiolene) complexes undergo reversible sulfurization–desulfurization in which the metal center changes between {WVI(S2)} and {WV}. The process is effectively controlled by the solution temperature, the solvent, and the electron-donating properties of the dithiolene ligands and results in a distinct color change (see scheme).