Copper–dioxygen reactivity involved in the formation of µ-oxo [(por)FeIII–O–CuIIL]+ heterodinuclear complexes (por = porphyrinate, L = tetradentate ligand), and novel synthesis of square-planar FeII(por) species

Abstract

In the reaction of Fe^III(por) species with [LCu^I(KMeCN)]⁺ and O₂ to give µ-oxo [(por)Fe^III–O–Cu^IIL]⁺3(por = porphyrinate, L = tetradentate ligand), copper–dioxygen adducts or their decomposition products must be present, otherwise [(por)Fe^III–OH] or [(por)Fe^III–O–Fe^III(por)] products appear; a novel synthesis ot square-planar Fe^II(por) is also described.