Decarbonylation of Pentamethylcyclopentadienyl Tetracarbonylvanadium, Cp*V(CO)4, in the Presence of Oxygen. The X-Ray Crystal Structure Analyses of Cp*V(CO)4 and [Cp*V(O)(μ-O)]4

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The reaction of Cp*V(CO)4 (1) with molecular oxygen in diluted pentane solution leads to a tetrameric dioxide, [Cp*V(O)(μ-O)]4 (2), which is a precursor of the octanuclear aggregate Cp*6V8O17 (3). The molecular structures of 1 and 2 have been determined by X-ray crystallography.