Effect of Electron-Withdrawing Dithiolate Bridge on the Electron-Transfer Steps in Diiron Molecules Related to [2Fe] H Subsite of the [FeFe]-Hydrogenases

Abstract : Two hexacarbonyl diiron compounds featuring dithiolate bridges with strong electron-withdrawing groups (CO2Me, tetrachloro-biphenyl) were synthesized and structurally characterized. Electrochemical study of these compounds demonstrates that such electron-withdrawing groups have a pronounced effect on both the reduction potentials and the electron transfer process. The reduced forms of these compounds catalyze the reduction of protons in dichloromethane. However, the tetrachloro-biphenyl derivative is the only one able to work in the potential range of its primary reduction process. A catalytic reaction scheme is proposed.
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Article dans une revue
Inorganic Chemistry, American Chemical Society, 2010, 49 (5), pp.2496 - 2501. 〈http://pubs.acs.org/doi/abs/10.1021/ic902401k〉. 〈10.1021/ic902401k〉
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http://hal.univ-brest.fr/hal-01577276
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Soumis le : vendredi 25 août 2017 - 11:58:59
Dernière modification le : mercredi 11 avril 2018 - 10:56:01

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Kévin Charreteur, Mohamed Kdider, Jean-François Capon, Frederic Gloaguen, François Y. Pétillon, et al.. Effect of Electron-Withdrawing Dithiolate Bridge on the Electron-Transfer Steps in Diiron Molecules Related to [2Fe] H Subsite of the [FeFe]-Hydrogenases. Inorganic Chemistry, American Chemical Society, 2010, 49 (5), pp.2496 - 2501. 〈http://pubs.acs.org/doi/abs/10.1021/ic902401k〉. 〈10.1021/ic902401k〉. 〈hal-01577276〉

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