AN UNUSUAL EXAMPLE OF MULTIPLE PROTON-COUPLED ELECTRON TRANSFERS IN A HIGH-VALENT OXOMANGANESE DIMER, [(PHEN)2MNIII(O)2MNIV(PHEN)2](CLO4)3 (PHEN=1,10-PHENANTHROLINE)

被引：42

作者：

MANCHANDA, R ^{[1
]}

THORP, HH ^{[1
]}

BRUDVIG, GW ^{[1
]}

CRABTREE, RH ^{[1
]}

机构：

[1] YALE UNIV, DEPT CHEM, POB 6666, NEW HAVEN, CT 06511 USA

来源：

INORGANIC CHEMISTRY | 1992年 / 31卷 / 20期

关键词：

D O I：

10.1021/ic00046a007

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The aqueous electrochemistry of [(phen)2MnIII(O)2MnIV(phen)2](ClO4)3 exhibits two reductions each of which is accompanied by the protonation of the bridging oxo group and are assigned to [(phen)2MnIII(O)2MnIV(phen)2]3+/[(phen)2MnIII(O)(OH)MnIII(phen)2]3+ and [(phen)2MnIII(O)(OH)MnIII(phen)2]3+/[(phen)2MnIII(OH)2MnII(phen)2]3+ couples. This observation has direct relevance to the oxidation of water to dioxygen in photosystem II. The pK(a) of the hydroxo group in the reduced species, [(phen)2MnIII(O)(OH)MnIII(phen)2]3+, has also been estimated.

引用

页码：4040 / 4041

页数：2

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