Well-Defined Iron Catalyst for Improved Hydrogenation of Carbon Dioxide and Bicarbonate
Journal of the American Chemical Society2012Vol. 134(51), pp. 20701–20704
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Carolin Ziebart, Christopher Federsel, Pazhamalai Anbarasan, Ralf Jackstell, Wolfgang Baumann, Anke Spannenberg, Matthias Beller
Abstract
The most efficient, stable, and easy-to-synthesize non-noble metal catalyst system for the reduction of CO(2) and bicarbonates is presented. In the presence of the iron(II)-fluoro-tris(2-(diphenylphosphino)phenyl)phosphino]tetrafluoroborate complex 3, the hydrogenation of bicarbonates proceeds in good yields with high catalyst productivity and activity (TON > 7500, TOF > 750). High-pressure NMR studies of the hydrogenation of carbon dioxide demonstrate that the corresponding iron-hydridodihydrogen complex 4 is crucial in the catalytic cycle.
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