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

ABSTRACT: We report here the first purely organometallic fac-[MnI (CO)3 (bis-Me NHC)Br] complex with unprecedented activity for the selective electrocatalytic reduction of CO2 to CO, exceeding 100 turnovers with excellent faradaic yields (?CO ?95?%) in anhydrous CH3 CN. 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.

SUBMITTER: Franco F

PROVIDER: S-EPMC5947128 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

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

Franco Federico F Pinto Mara F MF Royo Beatriz B Lloret-Fillol Julio J

Angewandte Chemie (International ed. in English) 20180314 17

We report here the first purely organometallic fac-[MnI (CO)3 (bis-Me NHC)Br] complex with unprecedented activity for the selective electrocatalytic reduction of CO2 to CO, exceeding 100 turnovers with excellent faradaic yields (ηCO ≈95 %) in anhydrous CH3 CN. Under the same conditions, a maximum turnover frequency (TOFmax ) of 2100 s-1 was measured by cyclic voltammetry, which clearly exceeds the values repo ...[more]

PMID: 29481726

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