Jagnyesh K. Satpathy

Introduction The activation and use of dioxygen and its associated compounds, like hydrogen peroxide and superoxide, hold significant importance for many mononuclear heme and nonheme iron-containing enzymes.[1-23] In the catalytic cycles of these iron-containing enzymes typically an iron–oxygen adduct is generated after dioxygen binding in the form of an iron(III)-superoxo species that then acts as a precursor for the biosynthesis of the active oxidant, which often is an iron(IV)-oxo species.