Artificial Mn4Ca Clusters with Exchangeable Solvent Molecules Mimicking the Oxygen‐Evolving Center in Photosynthesis. (29th January 2019)

• Record Type: Journal Article
• Authors: Chen, Changhui; Chen, Yang; Yao, Ruoqing; Li, Yanxi; Zhang, Chunxi
• Is Part Of: Angewandte Chemie. Volume 131:Number 12(2019)
• Page Start: 3979
• Page End: 3982
• Publication Date: 2019-01-29
• Subjects: Bioanorganische Chemie -- Heterometallische Komplexe -- Mangan -- Photosynthese -- Wasserspaltung; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201814440
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: The natural Mn4 Ca 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 Mn4 Ca clusters that precisely mimic the structure and function of the biological catalyst. Herein, we report the isolation and structural characterization of two Mn4 CaO4 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 Mn4 Ca cluster. These new artificial Mn4 Ca complexes provide important chemical clues to understand the structure and mechanism of the biological system. Abstract : Zur Nachahmung empfohlen : Die Konstruktion von robusten künstlichen Mn4 Ca‐Clustern, die das Sauerstoff entwickelnde Zentrum (OEC) in der natürlichen Photosynthese präzise nachahmen, stellt eine Herausforderung dar. Zwei Mn4 CaO4 ‐Komplexe werden hergestellt, die die austauschbaren Lösungsmittelmoleküle am Ca‐Zentrum, die Oxidationszustände der vier Manganionen und die Struktur des natürlichen OEC sehr gut wiedergeben.