Heterometallic cubane-type clusters [M′Mo3S4] (M′ = Au, Ag and Cu): synthesis, structures and electrochemical properties

Abstract

The heterometallic cubane-type clusters [(Cp*Mo)₃(μ₃-S)₄Au(PR₃)][PF₆][X] (Cp* = η⁵-C₅Me₅; 2a: R = Ph, X = BF₄; 2b: R = Cy, X = PF₆; 2c: R = ^tBu, X = PF₆), [(Cp*Mo)₃(μ₃-S)₄Ag(PPh₃)][PF₆][OTf] (3, OTf = OSO₂CF₃) and [(Cp*Mo)₃(μ₃-S)₄CuI][PF₆] (4) have been prepared by the reaction of [(Cp*Mo)₃(μ₂-S)₃(μ₃-S)][PF₆] (1) with complexes [(R₃P)Au][X], [(Ph₃P)Ag][OTf] and CuI, respectively. These clusters have been spectroscopically and crystallographically characterized. In addition, the electrochemical properties of clusters 2a, 2b, 2c and 4 are also discussed.