Vanadium, mixed valence dimer

The electrochemistry of dinuclear vanadium o-A-salicylideneamino-ethylphenyl complexes were investigated.372 Conversion of Viv—Viv dimers to Vv—Vv dimers was reported and serves as a representative model system for oxidation reactions.294 296 A related class of these dinuclear complexes form mixed valence vanadium(IV/V) complexes upon oxidation and exhibit an unusual electron delocalization over the V203 3+ core.310 A V111—Vlv mixed valent, dinuclear bis(salicy-lidene)ethylenediamine (salen) complex underwent multielectron oxidation with dioxygen to yield a Vv—Viv mixed valence complex.302... 

Mixed-valence species containing V11 and Viv bridged by an oxygen atom were intermediate in electron transfer between [V(Hedta)]- and [VO(Hedta)], and [V(edta)]2 and [VO(edta)]2-.815 Similarly bridged species were assumed in the reaction of [V(H20)6]2+ with [V0(H20)5]2+. Vanadium(III) dimeric complexes are the reaction products (see Section 33.4.9.3). 

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