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[Fe(C5Ar5)(CO)2Br] complexes as hydrogenase mimics for the catalytic hydrogen evolution reaction
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ORCID: 0000-0001-6373-4253, Masters, AF and Maschmeyer, T 2018
, '[Fe(C5Ar5)(CO)2Br] complexes as hydrogenase mimics for the catalytic hydrogen evolution reaction'
, Applied Catalysis B: Environmental, vol. 223, no. SI
, pp. 234-241
, doi: 10.1016/j.apcatb.2017.04.053.
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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 Type: | Article |
|---|---|
| Authors/Creators: | Hemming, EB and Chan, B and Turner, P and Corcilius, L and Price, JR and Gardiner, MG and Masters, AF and Maschmeyer, T |
| Keywords: | hydrogenase mimics, hydrogen evolution catalysts, electrochemistry, iron-based catalysts |
| Journal or Publication Title: | Applied Catalysis B: Environmental |
| Publisher: | Elsevier Science |
| ISSN: | 0926-3373 |
| DOI / ID Number: | 10.1016/j.apcatb.2017.04.053 |
| Copyright Information: | Copyright 2017 Elsevier B.V. A |
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| Item Statistics: | View statistics for this item |
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