Electrochemical study of a nonheme Fe(<scp>ii</scp>) complex in the presence of dioxygen. Insights into the reductive activation of O₂at Fe(<scp>ii</scp>) centers

Abstract

An original mechanistic study of the reaction of [(L)Fe^II]²⁺(L = TPEN) with dioxygen has been carried out by cyclic voltammetry. Electrochemical data of intermediates [(L)Fe^IV(O)]²⁺, [(L)Fe^III(OOH)]²⁺and [(L)Fe^III(OO)]⁺are reported. Reaction mechanism between this Fe^IIcomplex and O₂under reductive conditions is determined.