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H2 oxidation by cobaloximes: Mechanistic insight into hydrogen evolution catalysis

Del Ciello, Sarah A. and Winkler, Jay R. and Peters, Jonas C. and Gray, Harry B. (2015) H2 oxidation by cobaloximes: Mechanistic insight into hydrogen evolution catalysis. In: 250th American Chemical Society National Meeting & Exposition, August 16-20, 2015, Boston, MA.

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Cobaloximes are a series of macrocyclic cobalt complexes that have been shown to catalyze the hydrogen evolution reaction (HER) at low overpotentials. There has been much debate about the mechanism of this reaction, particularly with regard to H-H bond formation. As catalysts that operate close to the thermodn. potential, cobaloximes show some degree of reversibility, oxidizing hydrogen in the presence of base to form the conjugate acid. Presented here are kinetic studies of the cobaloxime-mediated oxidn. of hydrogen in the presence of base. Insight into the bifurcation between homolytic and heterolytic mechanisms of cobaloximecatalyzed HER is gained by studying the microscopic reverse reaction.

Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription Website
Winkler, Jay R.0000-0002-4453-9716
Peters, Jonas C.0000-0002-6610-4414
Gray, Harry B.0000-0002-7937-7876
Additional Information:© 2015 American Chemical Society.
Record Number:CaltechAUTHORS:20150918-085547603
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60316
Deposited By: Tony Diaz
Deposited On:18 Sep 2015 19:42
Last Modified:22 Nov 2019 09:58

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