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Hydrogen Evolution Catalyzed by Aluminum-Bridged Cobalt Diglyoximate Complexes

Kelley, Paul and Day, Michael W. and Agapie, Theodor (2013) Hydrogen Evolution Catalyzed by Aluminum-Bridged Cobalt Diglyoximate Complexes. European Journal of Inorganic Chemistry, 2013 (22-23). pp. 3840-3845. ISSN 1434-1948. doi:10.1002/ejic.201300309.

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The syntheses of several cobalt diglyoximate complexes connected by one or two aluminum bridges are described. The aluminum centers are supported by tunable tetradentate diamine bisphenoxide ligands. Electrochemical investigations revealed that the number of aluminum bridges and the nature of the substituents on the phenoxide ligands significantly affect the cobalt reduction potentials. The present aluminum–cobalt compounds are electrocatalysts for proton reduction to hydrogen at potentials negative relative to those of the boron- and proton-bridged analogs. The reported synthetic strategies allow modulation of the reduction potentials and the secondary coordination sphere interactions by tuning the ancillary ligands bound to aluminum.

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Agapie, Theodor0000-0002-9692-7614
Additional Information:© 2013 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Received: March 7, 2013; Published Online: May 14, 2013. Lawrence M. Henling is thanked for collection of the XRD data and preliminary structural analysis. The authors are grateful to the California Institute of Technology for funding. The Bruker KAPPA APEXII X-ray diffractometer was purchased through a National Science Foundation (NSF) CRIF:MU award to Caltech (CHE-0639094).
Funding AgencyGrant Number
Subject Keywords:Hydrogen; Cobalt; Reduction; Redox chemistry; Multimetallic complexes
Issue or Number:22-23
Record Number:CaltechAUTHORS:20140206-083918513
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Official Citation:Kelley, P., Day, M. W. and Agapie, T. (2013), Hydrogen Evolution Catalyzed by Aluminum-Bridged Cobalt Diglyoximate Complexes. Eur. J. Inorg. Chem., 2013: 3840–3845. doi: 10.1002/ejic.201300309
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43685
Deposited By: Tony Diaz
Deposited On:13 Mar 2014 23:01
Last Modified:10 Nov 2021 16:41

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