Charge Shift along the Metal–Metal Bond in Molybdenum-Tungsten Mixed-metal Complexes, [M3(μ3-O)2(μ-CH3COO)6(H2O)3]2+ (M3 = Mo2W and MoW2) and [MoW(O)2 (μ-O)2(μ-<i>N</i>,<i>N</i>′-edta)]2−

Abstract

Abstract An XPS study for series of dinuclear and trinuclear complexes of Mo and W including titled mixed-metal complexes and their parent homo-metal analogs shows that, in the mixed metal complexes, oxidation states of Mo and W shift to some extent toward lower and higher states than the formal ones, respectively. This is a result of charge shift along the metal–metal bond in the mixed metal clusters.