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Artificial Mn4-oxido complexes mimic the oxygen-evolving center in photosynthesis.
- Source :
-
Science Bulletin . May2017, Vol. 62 Issue 9, p665-668. 4p. - Publication Year :
- 2017
-
Abstract
- Graphical abstract Abstract The understanding of the structure-function relationship of the oxygen-evolving center (OEC), a Mn 4 Ca-cluster, in photosystem II is impeded mainly due to the complexity of the protein environment and lack of rational chemical models as a reference. In this study, two novel Mn 4 -oxido complexes have been synthesized and characterized, in which the peripheral ligands of the [MnIII 4 ] core are provided by eight μ 2 -carboxylate groups and two neutral terminal ligands (pyridine or isoquinoline). This type of peripheral ligation is very similar to the Mn 4 Ca-oxide model complexes recently reported to mimic the OEC. The new Mn 4 -oxide complex can catalyze the oxygen-evolving reaction in the presence of ButOOH as an oxidant. The structure and redox properties comparison of the Mn 4 -oxido and Mn 4 Ca-oxido complexes provide important clues to understanding the functional role of Ca in the OEC in natural photosynthesis, and develop more efficient artificial catalysts for the water-splitting reaction in the future. [ABSTRACT FROM AUTHOR]
- Subjects :
- *OXYGEN-evolving complex (Photosynthesis)
*PHOTOSYSTEMS
*LIGANDS (Chemistry)
Subjects
Details
- Language :
- English
- ISSN :
- 20959273
- Volume :
- 62
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Science Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 133424079
- Full Text :
- https://doi.org/10.1016/j.scib.2017.04.005