Volume 57, Issue 17
Communication
Open Access

A Highly Active N‐Heterocyclic Carbene Manganese(I) Complex for Selective Electrocatalytic CO2 Reduction to CO

Dr. Federico Franco

Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain

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Mara F. Pinto

Instituto de Tecnologia Química e Biológica António Xavier (ITQB), Nova University of Lisbon, Av. da República, 2780-157 Oeiras, Portugal

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Prof. Dr. Beatriz Royo

Corresponding Author

E-mail address: broyo@itqb.unl.pt

Instituto de Tecnologia Química e Biológica António Xavier (ITQB), Nova University of Lisbon, Av. da República, 2780-157 Oeiras, Portugal

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Prof. Dr. Julio Lloret‐Fillol

Corresponding Author

E-mail address: jlloret@iciq.es

Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain

Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluïs Companys, 23, 08010 Barcelona, Spain

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First published: 26 February 2018
Citations: 38

Abstract

We report here the first purely organometallic fac ‐[MnI(CO)3(bis‐MeNHC)Br] complex with unprecedented activity for the selective electrocatalytic reduction of CO2 to CO, exceeding 100 turnovers with excellent faradaic yields (η CO≈95 %) in anhydrous CH3CN. Under the same conditions, a maximum turnover frequency (TOFmax) of 2100 s−1 was measured by cyclic voltammetry, which clearly exceeds the values reported for other manganese‐based catalysts. Moreover, the addition of water leads to the highest TOFmax value (ca. 320 000 s−1) ever reported for a manganese‐based catalyst. A MnI tetracarbonyl intermediate was detected under catalytic conditions for the first time.

Number of times cited according to CrossRef: 38

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