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Enhanced CO2 Electroreduction Efficiency Through Secondary Coordination Effects On A Pincer Iridium Catalyst.

Steven T. Ahn, Elizabeth A. Bielinski, Elizabeth M. Lane, Yanqiao Chen, Wesley H Bernskoetter, N. Hazari, G. Palmore
Published 2015 · Chemistry, Medicine

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An iridium(III) trihydride complex supported by a pincer ligand with a hydrogen bond donor in the secondary coordination sphere promotes the electrocatalytic reduction of CO2 to formate in water/acetonitrile with excellent Faradaic efficiency and low overpotential. Preliminary mechanistic experiments indicate formate formation is facile while product release is a kinetically difficult step.
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