Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 12, Pages 3939-3942Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201814440
Keywords
bioinorganic chemistry; heterometallic complexes; manganese; photosynthesis; water splitting
Categories
Funding
- Strategic Priority Research Program of Chinese Academy of Sciences [XDA21010212, XDB17030600]
- National Key Research and Development Program of China [2017YFA0503704]
- National Natural Science Foundation of China [31770258]
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The natural Mn4Ca cluster in photosystem II serves as a blueprint to develop artificial water-splitting catalysts for the generation of solar fuel in artificial photosynthesis. Although significant advances have recently been achieved, it remains a great challenge to prepare robust artificial Mn4Ca clusters that precisely mimic the structure and function of the biological catalyst. Herein, we report the isolation and structural characterization of two Mn4CaO4 complexes with polar solvent molecules, acetonitrile or N,N-dimethylformamide, which closely mimics the two water molecules on the calcium ion, as well as the oxidation states of the four manganese ions and the main geometric structure of the natural Mn4Ca cluster. These new artificial Mn4Ca complexes provide important chemical clues to understand the structure and mechanism of the biological system.
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