title: Metal ion-coupled electron transfer of a nonheme oxoiron(IV) complex: remarkable enhancement of electron-transfer rates by Sc3+.
abstract: Rates of electron transfer from a series of one-electron reductants to a nonheme oxoiron(IV) complex, [(N4Py)Fe(IV)(O)](2+), are enhanced as much as 10(8)-fold by addition of metal ions such as Sc(3+), Zn(2+), Mg(2+), and Ca(2+); the metal ion effect follows the Lewis acidity of metal ions. The one-electron reduction potential of [(N4Py)Fe(IV)(O)](2+) is shifted to a positive direction by 0.84 V in the presence of Sc(3+) ion (0.20 M).
authors.affiliation: Department of Material and Life Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan.
authors.forename: Yuma
authors.initials: Y
authors.lastname: Morimoto
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Kotani
authors.forename: Jiyun
authors.initials: J
authors.lastname: Park
authors.forename: Yong-Min
authors.initials: YM
authors.lastname: Lee
authors.forename: Wonwoo
authors.initials: W
authors.lastname: Nam
authors.forename: Shunichi
authors.initials: S
authors.lastname: Fukuzumi
mesh_terms: D004578:Electron Spin Resonance Spectroscopy; D004579:Electron Transport; D006418:Heme / Q000737:chemistry; D058085:Iron Compounds / Q000737:chemistry*; D008670:Metals / Q000737:chemistry*; D012538:Scandium / Q000737:chemistry*
chemical_list: D058085:Iron Compounds; D008670:Metals; D006418:Heme; D012538:Scandium