Journal
DALTON TRANSACTIONS
Volume 46, Issue 38, Pages 12901-12907Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7dt02485a
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Funding
- Council of Scientific and Industrial Research (CSIR), New Delhi [01(2438)/10/EMR-II]
- Department of Science & Technology, New Delhi under the FIST [SR/FST/CSII-025/2013(C)]
- University Grants Commission under Centre for Advance Studies CAS-IV [F.540/11/CAS-IV/2016(SAP-I)]
- United States-India Educational Foundation for Fulbright-Nehru Senior Research Fellowship
- Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences of the U.S. Department of Energy [DE-FG02-07ER15888]
- Robert A. Welch Foundation [E-621]
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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 similar to 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.
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