A bis-diphosphine nickel complex with t-butyl functionalized pendant amines [Ni(PCy2Nt-Bu2)2]2+ has been synthesized. It is a highly active electrocatalyst for the oxidation of hydrogen in the presence of base. The turn-over rate of 50 s 1 under 1.0 atm H2 at a potential of –0.77 V vs the ferrocene couple is 5 times faster than the rate reported heretofore for any other molecular H2 oxidation catalyst.
This research was supported as part of the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the US Department of Energy, Office of
Science, Office of Basic Energy Sciences. Pacific Northwest National Laboratory is operated by Battelle for the US Department of Energy. Computational resources were provided by the Environmental Molecular Science Laboratory (EMSL) and the
National Energy Research Scientific Computing Center (NERSC) at Lawrence Berkeley National Laboratory.
Revised: March 22, 2011 |
Published: November 9, 2010
Citation
Yang J.Y., S. Chen, W.G. Dougherty, W.S. Kassel, R.M. Bullock, D.L. DuBois, and S. Raugei, et al. 2010.Hydrogen Oxidation Catalysis by a Nickel Diphosphine Complex with Pendant tert-Butyl Amines.Chemical Communications 46.PNNL-SA-74657.doi:10.1039/C0CC03246H