Catalytic Four-Electron Reduction of O2 via Rate-Determining Proton-Coupled Electron Transfer to a Dinuclear Cobalt-渭-1,2-peroxo Complex

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• 作者：Shunichi Fukuzumi ; Sukanta Mandal ; Kentaro Mase ; Kei Ohkubo ; Hyejin Park ; Jordi Benet-Buchholz ; Wonwoo Nam ; Antoni Llobet
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：June 20, 2012
• 年：2012
• 卷：134
• 期：24
• 页码：9906-9909
• 全文大小：335K
• 年卷期：v.134,no.24(June 20, 2012)
• ISSN：1520-5126

文摘

Four-electron reduction of O₂ by octamethylferrocene (Me₈Fc) occurs efficiently with a dinuclear cobalt-渭-1,2-peroxo complex, 1, in the presence of trifluoroacetic acid in acetonitrile. Kinetic investigations of the overall catalytic reaction and each step in the catalytic cycle showed that proton-coupled electron transfer from Me₈Fc to 1 is the rate-determining step in the catalytic cycle.