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The metal complex (tpy)(Mebim-py)Ru(II)(S)(2+) (tpy = 2,2' : 6',2''-terpyridine; Mebim-py = 3-methyl-1-pyridylbenzimidazol-2-ylidene; S = solvent) is a robust, reactive electrocatalyst toward both water oxidation to oxygen and carbon dioxide reduction to carbon monoxide. Here we describe its use as a single electrocatalyst for CO(2) splitting, CO(2) → CO + 1/2 O(2), in a two-compartment electrochemical cell.
Chen et al. (2012) studied this question.