Abstract
The strikingly different reactivity of a series of homo- and heterodinuclear [(MIII )(μ-O)2 (MIII )']2+ (M=Ni; M'=Fe, Co, Ni and M=M'=Co) complexes with β-diketiminate ligands in electrophilic and nucleophilic oxidation reactions is reported, and can be correlated to the spectroscopic features of the [(MIII )(μ-O)2 (MIII )']2+ core. In particular, the unprecedented nucleophilic reactivity of the symmetric [NiIII (μ-O)2 NiIII ]2+ complex and the decay of the asymmetric [NiIII (μ-O)2 CoIII ]2+ core through aromatic hydroxylation reactions represent a new domain for high-valent bis(μ-oxido)dimetal reactivity.
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