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Issue 68, 2017
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Electrocatalytic reduction of CO2 with CCC-NHC pincer nickel complexes

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Abstract

A CCC-NHC pincer Ni(II)Cl complex was prepared according to the metallation/transmetallation methodology. It was fully characterized by electrochemical, NMR spectroscopic, theoretical, and X-ray crystallographic methods. The complex and its cation were evaluated for electrocatalytic reduction of CO2 under a variety of conditions and found to provide some of the fastest catalytic rates and highest substrate selectivities (CO2vs. H+) reported. Rates improved in the presence of water and, significantly, catalysis occurred at the first reduction potential, presumably at the Ni(I) state. Controlled potential electrolysis (CPE) was found to yield CO at 34% and formate at 47% Faradaic efficiency (FE).

Graphical abstract: Electrocatalytic reduction of CO2 with CCC-NHC pincer nickel complexes

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Supplementary files

Article information


Submitted
09 Aug 2016
Accepted
09 Jun 2017
First published
09 Aug 2017

Chem. Commun., 2017,53, 9442-9445
Article type
Communication

Electrocatalytic reduction of CO2 with CCC-NHC pincer nickel complexes

J. D. Cope, N. P. Liyanage, P. J. Kelley, J. A. Denny, E. J. Valente, C. E. Webster, J. H. Delcamp and T. K. Hollis, Chem. Commun., 2017, 53, 9442
DOI: 10.1039/C6CC06537F

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