Water Oxidation Catalyzed by a Dinuclear Cobalt-Polypyridine Complex

被引：117
|
作者：
Wang, Hong-Yan [1 ,2 ]
Mijangos, Edgar [2 ]
Ott, Sascha [2 ]
Thapper, Anders [2 ]
机构：
[1] Shaanxi Normal Univ, Sch Chem & Chem Engn, Xian 710062, Peoples R China
[2] Uppsala Univ, Dept Chem, Angstrom Lab, S-75120 Uppsala, Sweden
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2014年 / 53卷 / 52期
关键词：
dinuclear cobalt complexes; homogeneous catalysis; photocatalysis; water oxidation; ELECTRONIC-STRUCTURE; PHOTOSYSTEM-II; BOND-FORMATION; O-2; DIOXYGEN; PATHWAY; CO; MECHANISM; METALS; PH;
D O I：
10.1002/anie.201406540
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The dinuclear Co complex [(TPA)Co(mu-OH)(mu-O-2)Co(TPA)](ClO4)(3) (1, TPA = tris(2-pyridylmethyl)amine) catalyzes the oxidation of water. In the presence of [Ru(bpy)(3)](2+) and S2O82-, photoinduced oxygen evolution can be observed with a turnover frequency (TOF) of 1.4 +/- 0.1 mol(O-2) mol(1)(-1) s(-1) and a maximal turnover number (TON) of 58 +/- 5 mol(O-2) mol(1)(-1). The complex is shown to act as a molecular and homogeneous catalyst and a mechanism is proposed based on the combination of EPR data and light-driven O-2 evolution kinetics.
引用
收藏
页码：14499 / 14502
页数：4
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