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[Fe(C5Ar5)(CO)2Br] complexes as hydrogenase mimics for the catalytic hydrogen evolution reaction

Citation

Hemming, EB and Chan, B and Turner, P and Corcilius, L and Price, JR and Gardiner, MG and Masters, AF and Maschmeyer, T, [Fe(C5Ar5)(CO)2Br] complexes as hydrogenase mimics for the catalytic hydrogen evolution reaction, Applied Catalysis B pp. 1-8. ISSN 0926-3373 (In Press) [Refereed Article]


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DOI: doi:10.1016/j.apcatb.2017.04.053

Abstract

A new iron-based hydrogenase mimic, [Fe(C5(p-C6H4Br)5)(CO)2Br], was synthesised and characterised using X-ray crystallography. Two analogous catalytic precursors, [Fe(C5Ar5)(CO)2Br] (Ar = C6H5; p-C6H4Br), were also analysed electrochemically in order to investigate how bulkier and more electron withdrawing C5Ar5 ligands affect the catalytic generation of hydrogen from trichloroacetic acid. Compared to previously reported iron-based cyclopentadienyl analogues, these complexes were found to have smaller overpotentials and larger turnover numbers. The [Fe(C5(p-C6H4Br)5)(CO)2Br] complex was found to be the most efficient of the two catalytic precursors with a turnover number of 25, an overpotential of around 310 mV and a faster rate of reaction compared to [Fe(C5Ph5)(CO)2Br].

Item Details

Item Type:Refereed Article
Keywords:hydrogenase mimics, hydrogen evolution catalysts, electrochemistry, iron-based catalysts
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Electroanalytical Chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Gardiner, MG (Associate Professor Michael Gardiner)
ID Code:119949
Year Published:In Press
Deposited By:Chemistry
Deposited On:2017-08-08
Last Modified:2017-08-08
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