Faculté des sciences

Cluster build-up in aqueous solution: synthesis, structure, protonation and catalytic properties of the trinuclear cation [(η6-C6H6)(η6-C6Me6)2Ru3(μ2-H)3(μ3-O)]+

Faure, Matthieu ; Jahncke, Manfred ; Neels, Antonia ; Stœckli-Evans, Helen ; Süss-Fink, Georg

In: Polyhedron, 1999, vol. 18, p. 2679-2685

The trinuclear oxo-capped cluster cation [(η6-C6H6)(η6-C6Me6)2Ru3 (μ2-H)3(μ3-O)]+ (2) was synthesised by reacting [(η6-C6Me6)Ru(H2O)3]2+ with... Plus

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    Summary
    The trinuclear oxo-capped cluster cation [(η6-C6H6)(η6-C6Me6)2Ru32-H)33-O)]+ (2) was synthesised by reacting [(η6-C6Me6)Ru(H2O)3]2+ with [(η6-C6Me6)2Ru22-H)3]+ in aqueous solution. The single-crystal X-ray structure analysis of the tetrafluoroborate salt shows the cation to contain a H2O molecule hydrogen-bonded to the μ3-oxo ligand. Acidification experiments show two protonation steps occuring at this H2O molecule and the oxo cap of the triruthenium cluster. The cluster cation 2 catalyses the hydrogenation of aromatic compounds in aqueous solution under biphasic conditions.