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Ligand Assisted Electrocatalytic Water Oxidation by a Copper (II) Complex in Neutral Phosphate Buffer

Abstract

Electrocatalytic water oxidation activity of a copper (II) complex, 1, [Cu(L1H)(L1)(OH2)](ClO4), with a redox active aryl oxime ligand, L1H [L1H = 1-(pyridin-2-yl) ethanone oxime] has been investigated. Complex 1 shows a remarkably high turnover frequency of ~100 s-1 in neutral phosphate buffer at about 675 mV overpotential with ~94% Faradic efficiency. Electrochemical analysis suggest the involvement of ligand moiety in a proton-coupled-electron-transfer (PCET) step during the catalytic cycle of complex 1, which in turn provides a way for accumulation of high oxidizing equivalent at the reaction center.

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Publication details

The article was received on 01 Feb 2019, accepted on 09 Apr 2019 and first published on 09 Apr 2019


Article type: Communication
DOI: 10.1039/C9CC00971J
Citation: Chem. Commun., 2019, Accepted Manuscript

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    Ligand Assisted Electrocatalytic Water Oxidation by a Copper (II) Complex in Neutral Phosphate Buffer

    H. Kuilya, N. alam, D. Sarma, D. Choudhury and A. Kalita, Chem. Commun., 2019, Accepted Manuscript , DOI: 10.1039/C9CC00971J

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