|
Type |
Poster Presentation |
Area |
Inorganic Chemistry |
Room No. |
Exhibition Hall 2+3 |
Time |
10월 19일 (목요일) 11:00~12:30 |
Code |
INOR.P-28 |
Subject |
Tuning the Redox Reactivity of a Nonheme Iron(III)-Peroxo Species by Binding Redox-Inactive Metal Ions |
Authors |
Seong Hee Bae, Yong-Min Lee1, Shunichi Fukuzumi2,*, Wonwoo Nam3,* Department of Chemistry and Nano Science, Ewha Womans University, Korea 1Research Institute for Basic Sciences, Ewha Womans University, Korea 2Graduate School of Science and Engineering, Meijo University, Japan 3Department of Chemistry, Ewha Womans University, Korea |
Abstract |
Redox-inactive metal ions are one of the most important co-factors involved in dioxygen activation and formation reactions by metalloenzymes. In this presentation, we have shown that the rate constants of electron transfer and C-H bond activation reactions by nonheme ion(III)-peroxo complexes binding redox- inactive metal ions, [(14-TMC)FeIII(O2)]+–Mn+ (Mn+ = Sc3+, Y3+, Lu3+, and La3+), increases proportionally with the increase of the Lewis acidity of the redox-inactive metal ions (ΔE). In contrast, the rate constants of the [(14-TMC)FeIII(O2)]+–Mn+ complexes in nucleophilic reactions with aldehydes decreases proportionally as the ΔE value increases. Thus, the Lewis acidity of the redox-inactive metal ions bound to the mononuclear nonheme iron(III)-peroxo complex modulates the reactivity of the [(14-TMC)FeIII(O2)]+–Mn+ complexes in electron-transfer, electrophilic, and nucleophilic reactions. |
E-mail |
bonoy0915@ewhain.net |
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