A Diiron Center Stabilized by a Bis‐TPA Ligand as a Model of Soluble Methane Monooxygenase: Predominant Alkene Epoxidation with H₂O₂

Abstract

Double act: The diiron(II) complex [Fe2(6-HPA)(O)(OH2)2](ClO4)4 (1) catalyzes alkene epoxidation with H2O2 via a peroxodiiron complex. Detailed isotope-labeling experiments with μ-18O-1 reveal incorporation of both oxo- and peroxo-derived oxygen atoms into the epoxide reaction product (see scheme; 6-HPA=1,2-bis[2-{bis(2-pyridylmethyl)aminomethyl}-6-pyridyl]ethane).