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Issue 5, 2014
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Electrocatalytic CO2 reduction by M(bpy-R)(CO)4 (M = Mo, W; R = H, tBu) complexes. Electrochemical, spectroscopic, and computational studies and comparison with group 7 catalysts

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Abstract

The tetracarbonyl molybdenum and tungsten complexes of 2,2′-bipyridine and 4,4′-di-tert-butyl-2,2′-bipyridine (M(bpy-R)(CO)4; R = H, M = Mo (1), W (2); R = tBu, M = Mo (3), W (4)) are found to be active electrocatalysts for the reduction of CO2. The crystal structures of M(bpy-tBu)(CO)4 (M = Mo (3), W (4)), the singly reduced complex [W(bpy)(CO)4][K(18-crown-6] (5) and the doubly reduced complex [W(bpy-tBu)(CO)3][K(18-crown-6)]2 (6) are reported. DFT calculations have been used to characterize the reduced species from the reduction of W(bpy-tBu)(CO)4 (4). These compounds represent rare examples of group 6 electrocatalysts for CO2 reduction, and comparisons are made with the related group 7 complexes that have been studied extensively for CO2 reduction.

Graphical abstract: Electrocatalytic CO2 reduction by M(bpy-R)(CO)4 (M = Mo, W; R = H, tBu) complexes. Electrochemical, spectroscopic, and computational studies and comparison with group 7 catalysts

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The article was received on 17 Dec 2013, accepted on 14 Feb 2014 and first published on 17 Feb 2014


Article type: Edge Article
DOI: 10.1039/C3SC53470G
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Citation: Chem. Sci., 2014,5, 1894-1900
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    Electrocatalytic CO2 reduction by M(bpy-R)(CO)4 (M = Mo, W; R = H, tBu) complexes. Electrochemical, spectroscopic, and computational studies and comparison with group 7 catalysts

    M. L. Clark, K. A. Grice, C. E. Moore, A. L. Rheingold and C. P. Kubiak, Chem. Sci., 2014, 5, 1894
    DOI: 10.1039/C3SC53470G

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