Electrosynthesis, physico-chemical and electrocatalytic properties of a novel electroactive Ru(0) material based on the (Ru(terpy)(CO)) frame (terpy=2,2′:6′,2′′-terpyridine) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Electroanalytical Chemistry Année : 2002

Electrosynthesis, physico-chemical and electrocatalytic properties of a novel electroactive Ru(0) material based on the (Ru(terpy)(CO)) frame (terpy=2,2′:6′,2′′-terpyridine)

Résumé

The preparation of an electroactive material based on a (Ru(terpy)(CO)) frame (terpy/2,2?:6?,2??-terpyridine) has been achieved by the two electron reduction of trans- or cis-[Ru(terpy)(CO)Cl2] complexes. During this electrochemical process, two chloride ligands are released and metal/metal bonds are formed. The highly coloured resulting compound containing Ru/Ru bonds can either be coated as a film on an electrode surface in acetonitrile electrolyte or generated as a soluble product in DMSO electrolyte. The nature of this material does not depend on the stereochemistry of the starting complex and its characterization, either as a solid and in solution, has been investigated by an interplay between electroanalytical and spectroscopic techniques including 1H-NMR, UV/vis, MS and IR. It appears from the data that one of the possible structure of the material is an oligomeric [Ru(terpy)(CO)]n with n/3. The trans- and cis-[Ru(terpy)(CO)Cl2] complexes and the related organometallic metal/metal based material display catalytic activity in the electroreduction of carbon dioxide in hydro-organic media. Interestingly, [Ru(terpy)(CO)]n modified electrodes also display electrocatalytic activity in purely aqueous solutions.
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Dates et versions

hal-03789534 , version 1 (27-09-2022)

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S. Chardon-Noblat, Philippe Da Costa, Alain Deronzier, Stéphanie Maniguet, Raymond Ziessel. Electrosynthesis, physico-chemical and electrocatalytic properties of a novel electroactive Ru(0) material based on the (Ru(terpy)(CO)) frame (terpy=2,2′:6′,2′′-terpyridine). Journal of Electroanalytical Chemistry, 2002, 529 (2), pp.135-144. ⟨10.1016/S0022-0728(02)00942-7⟩. ⟨hal-03789534⟩

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