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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. http://resolver.caltech.edu/CaltechAUTHORS:20140206-083918513

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Abstract

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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1002/ejic.201300309 DOIArticle
http://onlinelibrary.wiley.com/doi/10.1002/ejic.201300309/abstractPublisherArticle
ORCID:
AuthorORCID
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).
Funders:
Funding AgencyGrant Number
CaltechUNSPECIFIED
NSFCHE-0639094
Subject Keywords:Hydrogen; Cobalt; Reduction; Redox chemistry; Multimetallic complexes
Record Number:CaltechAUTHORS:20140206-083918513
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140206-083918513
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
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:13 Mar 2014 23:01
Last Modified:05 May 2017 20:48

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