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A ruthenium water oxidation catalyst containing a bipyridine glycoluril ligand

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Abstract

A mononuclear ruthenium complex [Ru(tpy)(bpg)H2O]2+ bearing a bipyridine glycoluril where bpg = 4b,5,7,7a-tetrahydro-4b,7a-nepiminomethanoimino-6H-imidazo[4,5-f][1,10]phenanthro-line-6,13-dione acts as a robust water oxidation catalyst (WOC) at pH = 1 using Ce(IV) as a sacrificial oxidant. The turn over number (TON) for water oxidation is found to be ∼5 times higher than the parent complex [Ru(tpy)(bpy)H2O]2+ where tpy = 2,2′:6′,2′′-terpyridine; bpy = 2,2′-bipyridine. The presence of intermolecular H-bonding groups and the electronic effect of the functionalized bipyridine ligand may play a significant role in water oxidation.

Graphical abstract: A ruthenium water oxidation catalyst containing a bipyridine glycoluril ligand

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Publication details

The article was received on 09 Jul 2017, accepted on 11 Sep 2017 and first published on 12 Sep 2017


Article type: Paper
DOI: 10.1039/C7DT02485A
Citation: Dalton Trans., 2017, Advance Article
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    A ruthenium water oxidation catalyst containing a bipyridine glycoluril ligand

    V. S. Mane, A. S. Kumbhar and R. P. Thummel, Dalton Trans., 2017, Advance Article , DOI: 10.1039/C7DT02485A

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