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Issue 43, 2016
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Electrocatalytic reduction of carbon dioxide with Mn(terpyridine) carbonyl complexes

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Abstract

The behavior of a series of Manganese (Mn) carbonyl compounds with 2,2′:6′,2′′-terpyridine (tpy) in κ2-N,N′ and κ3-N,N′,N′′ coordination modes under electrochemically reducing conditions is reported. In the presence of carbon dioxide (CO2) and Brønsted acid (phenol), two-electron reduction to carbon monoxide (CO) and water (H2O) is observed. Based on data obtained from cyclic voltammetry and infrared spectroelectrochemistry, the active state of the catalyst in the proposed mechanism for all cases is [Mn(κ3-N,N′,N′′-tpy)(CO)2]. Under these conditions, competing decomposition reactions limit the overall Faradaic efficiency. These results suggest the possibility of developing new tridentate ligand frameworks suitable for catalytic systems with Mn carbonyl cores.

Graphical abstract: Electrocatalytic reduction of carbon dioxide with Mn(terpyridine) carbonyl complexes

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Publication details

The article was received on 16 Aug 2016, accepted on 28 Sep 2016 and first published on 28 Sep 2016


Article type: Paper
DOI: 10.1039/C6DT03243E
Citation: Dalton Trans., 2016,45, 17179-17186
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    Electrocatalytic reduction of carbon dioxide with Mn(terpyridine) carbonyl complexes

    C. W. Machan and C. P. Kubiak, Dalton Trans., 2016, 45, 17179
    DOI: 10.1039/C6DT03243E

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