The Effects of Redox-Inactive Metal Ions on the Activation of Dioxygen: Isolation and Characterization of a Heterobimetallic Complex Containing a MnIII-(μ-OH)-CaII Core

被引：161
作者：
Park, Young Jun [1 ]
Ziller, Joseph W. [1 ]
Borovik, A. S. [1 ]
机构：
[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2011年 / 133卷 / 24期
关键词：
SECONDARY COORDINATION SPHERE; OXYGEN-EVOLVING COMPLEX; ALKALINE-EARTH CATIONS; ELECTRON-TRANSFER; CRYSTAL-STRUCTURE; LEWIS-ACIDS; QUANTITATIVE-EVALUATION; PHOTOSYSTEM-II; HYDROGEN-BONDS; H BONDS;
D O I：
10.1021/ja203458d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Rate enhancements for the reduction of dioxygen by a Mn-II complex were observed in the presence of redox-inactive group 2 metal ions. The rate changes were correlated with an increase in the Lewis acidity of the group 2 metal ions. These studies led to the isolation of heterobimetallic complexes containing Mn-III-(mu-OH)-M-II cores (M-II = Ca-II, Ba-II) in which the hydroxo oxygen atom is derived from O-2. This type of core structure has relevance to the oxygen-evolving complex within photosystem II.
引用
收藏
页码：9258 / 9261
页数：4
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