期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 17, 页码 5246-5249出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201500507
关键词
cerium; homogeneous catalysis; manganese complexes; nitrides; oxidation
资金
- Hong Kong University Grants Committee [AoE/P-03-08]
- Research Grants Council of Hong Kong [CityU 101612]
- Shenzhen Science and Technology Research Grant [JCYJ20120613115247045]
The study of manganese complexes as water-oxidation catalysts (WOCs) is of great interest because they can serve as models for the oxygen-evolving complex of photosystem II. In most of the reported Mn-based WOCs, manganese exists in the oxidation states III or IV, and the catalysts generally give low turnovers, especially with one-electron oxidants such as Ce-IV. Now, a different class of Mn-based catalysts, namely manganese(V)-nitrido complexes, were explored. The complex [Mn-V(N)(CN)(4)](2-) turned out to be an active homogeneous WOC using (NH4)(2)[Ce(NO3)(6)] as the terminal oxidant, with a turnover number of higher than 180 and a maximum turnover frequency of 6 min(-1). The study suggests that active WOCs may be constructed based on the Mn-V(N) platform.
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