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Synthesis of a trinuclear cation [H<sub>3</sub>Ru<sub>3</sub>(Fc-arene)(C<sub>6</sub>Me<sub>6</sub>)<sub>2</sub>(O)]<sup>+</sup> containing a ferrocenyl group tethered to an arene ligand
Auteur(s)
Vieille-Petit, Ludovic
Unternährer, Sabine
Date de parution
2003-11-20
In
Inorganica Chimica Acta, 2003/355/335-339
Résumé
Ferrocene carboxylic acid 2-cyclohexa-1,4-dienyl-ethyl ester (<b>1</b>) is prepared from ferrocene carboxylic acid and 2-cyclohexa-1,4-dienyl-ethanol. This diene reacts with RuCl<sub>3</sub>•<i>n</i>H<sub>2</sub>O in refluxing ethanol to afford quantitatively [Ru(Fc-arene)Cl<sub>2</sub>]<sub>2</sub> (<b>2</b>) (Fc-arene=ferrocene carboxylic acid phenethyl ester). The dinuclear complex <b>2</b> reacts with triphenylphosphine to give the mononuclear complex [Ru(Fc-arene)(PPh<sub>3</sub>)Cl<sub>2</sub>] (<b>3</b>). The trinuclear arene-ruthenium cluster cation [H<sub>3</sub>Ru<sub>3</sub> (Fc-arene)(C<sub>6</sub>Me<sub>6</sub>)<sub>2</sub>(O)]<sup>+</sup> (<b>4</b>) is synthesised from the dinuclear precursor [H<sub>3</sub>Ru<sub>2</sub> (C<sub>6</sub>Me<sub>6</sub>)<sub>2</sub>]<sup>+</sup> and the mononuclear complex [Ru(Fc-arene)(H<sub>2</sub>O)<sub>3</sub>]<sup>2+</sup>, accessible from <b>2</b> in aqueous solution. The water-soluble trinuclear cluster cation <b>4</b> catalyses the hydrogenation of benzene to give cyclohexane under biphasic conditions.
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Type de publication
journal article
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