title: Ligand topology effect on the reactivity of a mononuclear nonheme iron(IV)-oxo complex in oxygenation reactions.
abstract: Mononuclear nonheme iron(IV)-oxo complexes with two different topologies, cis-α-[Fe(IV)(O)(BQCN)](2+) and cis-β-[Fe(IV)(O)(BQCN)](2+), were synthesized and characterized with various spectroscopic methods. The effect of ligand topology on the reactivities of nonheme iron(IV)-oxo complexes was investigated in C-H bond activation and oxygen atom-transfer reactions; cis-α-[Fe(IV)(O)(BQCN)](2+) was more reactive than cis-β-[Fe(IV)(O)(BQCN)](2+) in the oxidation reactions. The reactivity difference between the cis-α and cis-β isomers of [Fe(IV)(O)(BQCN)](2+) was rationalized with the Fe(IV/III) redox potentials of the iron(IV)-oxo complexes: the Fe(IV/III) redox potential of the cis-α isomer was 0.11 V higher than that of the cis-β isomer.
authors: Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea.
authors: Seungwoo
authors: S
authors: Hong
authors: Yong-Min
authors: YM
authors: Lee
authors: Kyung-Bin
authors: KB
authors: Cho
authors: Karuppasamy
authors: K
authors: Sundaravel
authors: Jaeheung
authors: J
authors: Cho
authors: Myoung Jin
authors: MJ
authors: Kim
authors: Woonsup
authors: W
authors: Shin
authors: Wonwoo
authors: W
authors: Nam
mesh_terms: D056831:Coordination Complexes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D005296:Ferrous Compounds / Q000737:chemistry*; D008024:Ligands; D008958:Models, Molecular; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D056831:Coordination Complexes; D005296:Ferrous Compounds; D008024:Ligands; D010100:Oxygen