Phosphine-substituted Cubane Clusters with the Mo3S4Ga Core

Abstract

The reaction of cationic clusters [Mo₃S₄(Dppet)₃X₃]X (I; Dppet = cis-1,2-bis(diphenylphosphino)ethylene; X = Cl, Br) with gallium metal in tetrahydrofuran (THF) affords cubane-like clusters [Mo₃S₄(GaX)(Dppet)₃X₃] (IIa, X = Cl; IIb, X = Br). In the synthesis of IIb, the crystals of the cationic cluster [Mo₃S₄(Dppet)₃Br₃](GaBr₄) (III) were isolated from the mother liquor. The structures of complexes IIa ∙ 1.5THF, IIb ∙ 1.5THF, III ∙ 1.625THF, and [Mo₃S₄(Dppe)₃Br₃](GaBr₄) ∙ 2THF (IV ∙ 2THF; Dppe = 1,2-bis(diphenylphosphino)ethane) were established by X-ray diffraction (CIF files CCDC № 1851341–1851344).