Ergebnisse einschränken

Spezialsammlung

Sprache

Université de Neuchâtel

Synthesis, molecular structure and electrochemical properties of the star-shaped dinuclear complexes [Ru2(η6-p-Me–C6H4-iPr)2(μ2-S-p-C6H4–C4H3S)3]+ and [Rh2(η5-C5Me5)2(μ2-S-p-C6H4–C4H3S)3]+

Chérioux, Frédéric ; Therrien, Bruno ; Sadki, Saïd ; Comminges, Clément ; Süss-Fink, Georg

In: Journal of Organometallic Chemistry, 2005, vol. 690, p. 2365-2371

The dinuclear cations [Ru2(η6-p-Me–C6H4–iPr)2(μ2-S-p-C6H4–Br)3]+ and [Rh(η5-C5Me5)(μ2-S-p-C6H4–Br)3]+ are found to undergo triple Suzuki coupling with...

Université de Neuchâtel

Synthesis and molecular structure of the trinuclear ruthenium cluster cations [H3Ru3{C6H5(CH2)2OC(O)C6H5}(C6Me6)2(O)]+ and [H3Ru3{C6H5(CH2)2OC(O)(CH2)3C6H5}(C6Me6)2(O)]+

Vieille-Petit, Ludovic ; Therrien, Bruno ; Süss-Fink, Georg

In: Inorganica Chimica Acta, 2004, vol. 357, p. 3437-3442

Benzoic acid 2-cyclohexa-1,4-dienyl ethyl ester (1), and 4-phenylbutyric acid 2-cyclohexa-1,4-dienyl ethyl ester (2) are prepared by reacting, respectively, benzoic acid and 4-phenylbutyric acid with 2-cyclohexa-1,4-dienyl ethanol. These dienyl ester derivatives react with RuCl3• n H2O in refluxing ethanol to afford in good yield...

Université de Neuchâtel

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...

Université de Neuchâtel

Catalytic hydrogenation of aromatics under biphasic conditions: isolation and structural characterisation of the cluster intermediate [(η6-C6Me6)2(η6-C6H6)Ru3(μ2-H)2(μ2-OH)(μ3-O)]+

Faure, Matthieu ; Tesouro Vallina, Ana ; Vieille-Petit, Ludovic ; Stoeckli-Evans, Helen ; Süss-Fink, Georg

In: Journal of Organometallic Chemistry, 2001, vol. 621, p. 103-108

The water-soluble cluster cation [(η6-C6Me6)2(η6-C6H6)Ru3(μ2-H)3(μ3-O)]+ (2) catalyses the hydrogenation of benzene and benzene derivatives to give the corresponding cyclohexanes under biphasic conditions. The catalytic activity of 2 depends...

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...

Université de Neuchâtel

Synthesis and structural characterisation of new cationic dinuclear ruthenium(II) thiolato complexes of the type [Ru2(η6-arene)2(μ-p-S–C6H4–Br)3]+

Chérioux, Frédéric ; Therrien, Bruno ; Süss-Fink, Georg

In: Inorganica Chimica Acta, 2004, vol. 357, p. 834-838

Dinuclear dichloro complexes [Ru(C6H6)Cl2]2, [Ru(p-MeC6H4iPr)Cl2]2, [Ru(1,2,4,5-C6H2Me4)Cl2]2, and [Ru(C6Me6)Cl2]2 react in ethanol with p-bromothiophenol to give the corresponding...

Université de Neuchâtel

Cationic arene ruthenium complexes containing chelating 1,10-phenanthroline ligands

Canivet, Jérôme ; Karmazin-Brelot, Lydia ; Süss-Fink, Georg

In: Journal of Organometallic Chemistry, 2005, vol. 690, p. 3202-3211

The monocationic chloro complexes containing chelating 1,10-phenanthroline (phen) ligands [(arene)Ru(N∩N)Cl] + (1: arene = C6H6, N∩N = phen; 2: arene = C6H6, N∩N = 5-NO2-phen; 3: arene = p-MeC6H4Pri, N∩N = phen; 4: arene =...

Université de Neuchâtel

Hydrogen-bonded systems between monocarboxylic acids and the trinuclear cluster cation [H3Ru3(C6H6)(C6Me6)2(O)]+ : cold-spray ionisation mass spectroscopic and X-ray crystallographic studies

Therrien, Bruno ; Vieille-Petit, Ludovic ; Süss-Fink, Georg ; Sei, Yoshihisa ; Yamaguchi, Kentaro

In: Journal of Organometallic Chemistry, 2004, vol. 689, p. 2820-2826

The hydrogen-bonded systems formed between monocarboxylic acid derivatives and the trinuclear arene-ruthenium cluster cation [H3Ru3(C6H6)(C6Me6)2(O)]+ (1) have been studied in solution by cold-spray ionisation mass spectroscopy (CSI-MS) and in the solid state by single-crystal X-ray structure analysis...

Université de Neuchâtel

Dinuclear ruthenium sawhorse-type complexes containing bridging ligands with ferrocenyl substituents in endo/endo, endo/exo and exo/exo orientations

Auzias, Mathieu ; Therrien, Bruno ; Labat, Gaël ; Stoeckli-Evans, Helen ; Süss-Fink, Georg

In: Inorganica Chimica Acta, 2006, vol. 359, p. 1012-1017

The dinuclear ruthenium complexes Ru2(CO)4(OOCC5H4FeC5H5)2L2 (L = NC5H5: 1, L = PPh3: 2) have been synthesized from Ru3(CO)12, ferrocene carboxylic acid and pyridine or triphenylphosphine, respectively. The single-crystal X-ray structure analysis reveals...

Université de Neuchâtel

Aqueous oxidation of alcohols catalyzed by artificial metalloenzymes based on the biotin–avidin technology

Thomas, Christophe M. ; Letondor, Christophe ; Humbert, Nicolas ; Ward, Thomas R.

In: Journal of Organometallic Chemistry, 2005, vol. 690, p. 4488-4491

Based on the incorporation of biotinylated organometallic catalyst precursors within (strept)avidin, we have developed artificial metalloenzymes for the oxidation of secondary alcohols using tert-butylhydroperoxide as oxidizing agent. In the presence of avidin as host protein, the biotinylated aminosulfonamide ruthenium piano stool complex 1 (0.4 mol%) catalyzes the oxidation of...