Water oxidation by Ru

ConcepcionJJ.JurssJW, Templeton JL, MeyerTJ. One site is enough. Catalytic water oxidation by [Ru(tpy)(bpm)(OH2)]. Jz4m Chem Soc. 2008 130 16462. 

Since the initial papers on RU4, this complex has been extensively characterized and shown to function when immobilized on carbon nanotubes as a water electrooxidation catalyst [92], in solution as a homogeneous catalyst for visible-light-driven water oxidation [93], and when interfaced with [Ru(bpy)3] +-sensitized Ti02 surfaces [94], RU4 has shown no evidence of hydrolytic decomposition to the metal oxides (RUO2, WO3) in any of these studies. The mechanism of water oxidation by [Ru(bpy)] + has also been probed in some depth and the principal catalytic cycle for water oxidation involves sequential oxidation of the resting oxidation state of RU4, which is Ru(IV)4, to the oxidation state Ru(V)4 [95], followed by O2 evolution. 

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