Interaction of dimethyl(dimethylarsinothio)arsine sulphide with Group 6 metal carbonyls

Abstract

The interaction of dimethyl(dimethylarsinothio)arsine sulphide, Me₂(S)As·S·AsMe₂, with u.v.-irradiated tetrahydrofuran solutions of the appropriate metal hexacarbonyls yields the complexes [M(CO)₅L](M = Cr or W, L = Me₂As·S·AsMe₂) and [MM′(CO)₁₀L](M = M′= Cr, L = Me₂As·AsMe₂; M = Cr, M′= W or M = M′= W, L = Me₂As·S·AsMe₂). The binuclear complexes with L = Me₂As·S·AsMe₂ are thermally unstable and lose sulphur. The complex [Cr(CO)₅L] affords [Cr(S₂AsMe₂)₃] on heating.