Selective Reduction of CO2 to a Formate Equivalent with Heterobimetallic Gold---Copper Hydride Complexes

DOI: 10.14469/hpc/3010 Metadata

Created: 2017-08-29 18:27

Last modified: 2017-10-04 12:55

Author: Alexandra Hicken

License: Creative Commons: Public Domain Dedication 1.0

Funding: (none given)

Co-author: Andrew White
Co-author: Mark Crimmin


A series of heterobimetallic complexes containing 3-center,2-electron Au–H–Cu bonds have been prepared from addition of a parent gold hydride to a bent d10 copper(I) fragment. These highly unusual heterobimetallic complexes represent a missing link in the widely investigated series of neutral and cationic coinage metal hydride complexes containing Cu–H–Cu and M–H–M+ moieties (M = Cu, Ag). The well-defined heterobimetallic hydride complexes act as pre-catalysts for the selective reduction of CO2 to HCO2Bpin using HBpin as a reductant. Similar results are found with ill-defined Pd / Au and Ni / Au ad-mixtures. In all cases the selectivity of these catalysts for production of a formate equivalent surpasses that of the monomeric components.


10.14469/hpc/3011 3•PPh3
10.14469/hpc/3012 1•Au
10.14469/hpc/3013 2•Au
10.14469/hpc/3015 DFT_Coordinates
10.14469/hpc/3145 3•Au