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首页> 美国政府科技报告 >Mechanisms of the Dismutation of Superoxide Catalyzed by Cu(II)-Phenanthroline Complex and of the Oxidation of Cu(I)-Phenanthroline Complex by Oxygen in Aqueous Solution. Progress Report, July 1982-June 1983
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Mechanisms of the Dismutation of Superoxide Catalyzed by Cu(II)-Phenanthroline Complex and of the Oxidation of Cu(I)-Phenanthroline Complex by Oxygen in Aqueous Solution. Progress Report, July 1982-June 1983

机译：Cu（II） - 邻菲啰啉配合物催化超氧化物歧化反应及水溶液氧化Cu（I） - 邻菲啰啉配合物的机理。进展报告，1982年7月至1983年6月

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摘要

Using the technique of pulse radiolysis to generate O sub 2- , the catalytic effect of copper 1,10 phenanthroline, ((op) sub 2 Cu exp 2+ ), on the dismutation of O sub 2- in aqueous solution was studied. The rate constants of the reduction of (op) sub 2 Cu exp 2+ and oxidation of (op) sub 2 Cu exp + by O sub 2- have been determined to be (1.93 +- 0.07) 10 exp 9 M exp -1 s exp -1 and (2.95 +- 0.3) 10 exp 8 M exp -1 s exp -1 , respectively. The turnover rate constant, k/sub cat/, has been calculated to be (5.1 +- 0.9) 10 exp 8 M exp -1 s exp -1 . The reaction mechanism for the oxidation of (op) sub 2 Cu exp + by molecular oxygen in aqueous solutions has been investigated and the rate constant k/sub -10/ = (5.0 +- 0.3) 10 exp 4 M exp -1 s exp -1 has been determined. The rate constant of the oxidation of (op) sub 2 Cu exp + by H sub 2 O sub 2 was measured to be k sub 22 = (937 +- 20) M exp -1 s exp -1 . (ERA citation 08:036699)

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