Université de Neuchâtel

Ruthenium Nanoparticles Intercalated in Hectorite: A Reusable Hydrogenation Catalyst for Benzene and Toluene

Süss-Fink, Georg ; Mollwitz, Birgit ; Therrien, Bruno ; Dadras, Massoud ; Laurenczy, Gabor ; Meister, Annette ; Meister, Götz

In: Journal of Cluster Science, 2007, vol. 18, no. 1, p. 87-95

The cationic organometallic aqua complexes formed by hydrolysis of [(C6H6)RuCl2]2 in water, mainly [(C6H6)Ru(H2O)3]2+, intercalate into sodium hectorite by ion exchange, replacing the sodium cations between the anionic silicate layers. The yellow hectorite thus obtained reacts in ethanol with...

Université de Neuchâtel

The water-soluble cluster cation [H3Ru3(C6H6)(C6Me6)2(O)]+: Improved synthesis, aerobic oxidation, electrochemical properties and ligand exchange studies

Vieille-Petit, Ludovic ; Tschan, Mathieu J.-L. ; Süss-Fink, Georg ; Laurenczy, Gabor ; Hagen, Collin M. ; Finke, Richard G. ; Geneste, Florence ; Moinet, Claude

In: Polyhedron, 2005, vol. 24, no. 15, p. 1961-1967

The synthesis of the trinuclear cluster cation [H3Ru3(C6H6)(C6Me6)2(O)]+ (1) has been considerably improved by changes in the NaBH4 addition step and by introducing chromatographic methods; in addition, the redox and ligand exchange properties of 1 have been studied. Although exposure...

Université de Neuchâtel

Mechanistic in situ High-Pressure NMR Studies of Benzene Hydrogenation by Supramolecular Cluster Catalysis with [(η6-C6H6)(η6-C6Me6)2Ru3(μ3-O)(μ2-OH)(μ2-H)2][BF4]

Laurenczy, Gabor ; Faure, Matthieu ; Vieille-Petit, Ludovic ; Süss-Fink, Georg ; Ward, Thomas R.

In: Advanced Synthesis & Catalysis, 2002, vol. 344, p. 1073-1077

In situ high-pressure NMR spectroscopy of the hydrogenation of benzene to give cyclohexane, catalysed by the cluster cation [(η6-C6H6)(η6-C6Me6)2Ru3(μ3-O)(μ2-OH)(μ2-H)2]+2, supports a mechanism involving a supramolecular host-guest...

Université de Neuchâtel

Supramolecular cluster catalysis : facts and problems

Süss-Fink, Georg ; Therrien, Bruno ; Vieille-Petit, Ludovic ; Tschan, Mathieu J.-L. ; Romakh, Vladimir B. ; Ward, Thomas R. ; Dadras, Massoud ; Laurenczy, Gabor

In: Journal of Organometallic Chemistry, 2004, vol. 689, p. 1362-1369

By checking the chemistry underlying the concept of "supramolecular cluster catalysis" we identified two major errors in our publications related to this topic, which are essentially due to contamination problems. (1) The conversion of the "closed" cluster cation [H3Ru3(C6H6)(C6Me6)2(O)]+ (1) into the...