A cyclic mixed-valence MoVI/MoV polyoxothiomolybdate cluster anion stabilized by a [(μ-I){Ag(PPh3)3}2]+ complex cation. Preparation and structure of [(μ-I){Ag(PPh3)3}2]2 [Mo8O8(μ-OH)2(μ-OEt)6(μ-S)8(μ3-O)4{Mo(DMF)2}] · 2EtOH

Abstract

Abstract Treatment of (NMe4)2[Mo2O2S6] with Ag(PPh3)3I in the presence of NaOEt in DMF/EtOH resulted in the formation of a novel MoVI/MoV polyoxothiomolybdate cluster compound [(μ-I){Ag(PPh3)3}2]2[Mo8O8(μ-OH)2 (μ-OEt)6(μ-S)8(μ3-O)4{Mo(DMF)2}] · 2EtOH. The cyclic cluster polyanion consists of an octamer {Mo8O8(μ-OH)2(μ-OEt)6 (μ-S)8(μ3-O)4} that encapsulates a central {MoVI(DMF)2 (μ3-O)4} octahedron.