Rhodium nitrosyl catalysts for CO2 hydrogenation to formic acid under mild conditions |
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| Authors: | Fenglou Zou Jacqueline M Cole Timothy G J Jones Li Jiang |
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| Institution: | 1. Schlumberger Cambridge Research, , Cambridge, CB3 0EL UK;2. Cavendish Laboratory, University of Cambridge, , Cambridge, CB3 0HE UK;3. Stimulation Fluids Engineering, Schlumberger Technology Corporation, , Sugar Land, Texas, 77478 United States |
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| Abstract: | A new synthetic protocol for catalysing CO2 hydrogenation to formic acid under mild conditions is reported, and the CO2 hydrogenation is efficiently achieved by dcpe‐rhodium‐nitrosyl catalyst precursors, Rh(NO)(dcpe) (1) (dcpe = 1,2‐dicyclohexylphosphinoethane) and Rh(III)(NO)(dcpe)Cl2 (2). The catalytic activity of 1 is noteworthy for being able to proceed in the absence of protic conditions. Compound 2 is characterized by NMR, IR and X‐ray crystallography. In particular, 2 is observed to bear a bent NO ligand with a Rh–N–O angle of 115.7(3)°, representing one of the smallest M–N–O angles known. Copyright © 2012 John Wiley & Sons, Ltd. |
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| Keywords: | CO2 formic acid rhodium‐based catalyst nitrosyl ligand catalytic hydrogenation |
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