Abstract

Catalysts of water oxidation for artificial photosynthesis, formed from the binuclear oxysulfate ruthenium(IV) complex K4[Ru2(SO4)2(μ-SO4)2(μ-O)2] · 2H2O, are studied via chromatography-mass spectrometry. It is shown that these new catalysts do not contain organic ligands and are more stable and active than the familiar blue dimer [(bpy)2Ru(OH)2]2O4+ and its analogues. It is found that adamantane-like tetra-nuclear and octanuclear ruthenium clusters are active catalysts that oxidize water to oxygen and oxozone O4, respectively.

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