Manganificent potential: A dinuclear manganese catalyst contains metal centers that are coordinated by a central phenolate, with adjoining imidazole and carboxylate groups, which are all important functionalities in the natural oxygen-evolving center. The complex catalyzes the conversion of water to oxygen in the presence of a single-electron oxidant [Ru(bpy)3]3+ (see picture, bpy=2,2′-bipyridine, A=acceptor).
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