Hydrogen oxidation catalysis by a nickel diphosphine complex with pendant tert-butyl amines

Jenny Y. Yang; Shentan Chen; William G. Dougherty; W. Scott Kassel; R. Morris Bullock; Daniel L. DuBois; Simone Raugei; Roger Rousseau; Michel Dupuis; M. Rakowski DuBois

doi:10.1039/C0CC03246H

Hydrogenoxidation catalysis by a nickel diphosphine complex with pendant tert-butyl amines†‡

Jenny Y. Yang,*^a Shentan Chen,^a William G. Dougherty,^b W. Scott Kassel,^b R. Morris Bullock,^a Daniel L. DuBois,^a Simone Raugei,^a Roger Rousseau,^a Michel Dupuis^a and M. Rakowski DuBois^a

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^a Center for Molecular Electrocatalysis, Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, Richland, USA
E-mail: jenny.yang@pnl.gov
Fax: +1 509-375-6660
Tel: +1 509-372-4639

^b Department of Chemistry, Villanova University, Villanova, Pennsylvania, USA

Abstract

A bis-diphosphine nickel complex with tert-butyl functionalized pendant amines [Ni(P^Cy₂N^t-Bu₂)₂]²⁺ has been synthesized. It is a highly active electrocatalyst for the oxidation of hydrogen in the presence of base. The turnover 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 synthetic molecular H₂ oxidation catalyst.

This article is part of the themed collection: Hydrogen

Chemical Communications

Hydrogenoxidation catalysis by a nickel diphosphine complex with pendant tert-butyl amines†‡

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Hydrogen oxidation catalysis by a nickel diphosphine complex with pendant tert-butyl amines

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