Université de Neuchâtel

Oxidation of saturated hydrocarbons with peroxyacetic acid catalyzed by vanadium complexes

Gonzalez Cuervo, Laura ; Kozlov, Yuriy N. ; Süss-Fink, Georg ; Shul’pin, Georgiy B.

In: Journal of Molecular Catalysis A: Chemical, 2004, vol. 218, no. 2, p. 171-177

Peroxyacetic acid (PAA) oxidizes alkanes in acetonitrile or acetic acid at 60 °C if a soluble vanadium(V) salt, n-Bu4NVO3 (1), is used as a catalyst. Corresponding ketones, alcohols and alkyl hydroperoxides are the main products. Methane, ethane, propane, cyclohexane, and other higher alkanes were substrates in the oxidations. The proposed mechanism involves...

Université de Neuchâtel

Hydrogen Peroxide Oxygenation of Alkanes Including Methane and Ethane Catalyzed by Iron Complexes in Acetonitrile

Shulpin, Georgiy B. ; Nizova, Galina V. ; Kozlov, Yuriy N. ; Gonzalez Cuervo, Laura ; Süss-Fink, Georg

In: Advanced Synthesis & Catalysis, 2004, vol. 346, p. 317-332

This paper describes an investigation of the alkane oxidation with hydrogen peroxide in acetonitrile catalyzed by iron(III) perchlorate (1), iron(III) chloride (2), iron(III) acetate (3) and a binuclear iron(III) complex with 1,4,7-triazacyclononane (4). The corresponding alkyl hydroperoxides are the main products. Nevertheless in the kinetic study of cyclohexane...

Université de Neuchâtel

Hexacatenar liquid-crystalline complexes of palladium(II) and platinum(II) based on trialkoxystilbazole esters

Plasseraud, Laurent ; Gonzalez Cuervo, Laura ; Guillon, Daniel ; Süss-Fink, Georg ; Deschenaux, Robert ; Bruce, Duncan W. ; Donnio, Bertrand

In: Journal of Materials Chemistry, 2002, vol. 12, p. 2653-2658

The synthesis and characterisation of 4-(3,4,5-trialkoxybenzoyloxy)pyridines (1a–e), and of their corresponding palladium(II), (2a–e), and platinum(II), (3a–e), complexes are described. The pyridine-based ligands are not mesomorphic, but upon complexation to PdCl2 or PtCl2, new hexacatenar mesogens are formed which show exclusively the hexagonal...

Université de Neuchâtel

Mono and oligonuclear vanadium complexes as catalysts for alkane oxidation : synthesis, molecular structure, and catalytic potential

Süss-Fink, Georg ; Gonzalez Cuervo, Laura ; Therrien, Bruno ; Stoeckli-Evans, Helen ; Shul’pin, Georgiy B.

In: Inorganica Chimica Acta, 2004, vol. 357, p. 475-484

A series of mono- and oligonuclear vanadium(V) and vanadium(IV) complexes containing various chelating N,O-, N3-, and O2-ligands have been prepared. The biphasic reaction of an aqueous solution of ammonium vanadate and a dichloromethane solution of hexamethylphosphoramide (hmpa) and pyrazine-2-carboxylic acid (pcaH) or pyrazine-2,5-dicarboxylic acid...

Université de Neuchâtel

Iron and Vanadium Complexes for the Catalytic Oxidation of Hydrocarbons : Chemical Catalysts and Biomimetic Models

Gonzalez Cuervo, Laura ; Süss-Fink, Georg (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2003 ; 1723.

Le but de ce travail de thèse, était, d'une part, d'étudier l'activité catalytique des nouveaux complexes de vanadium pour la fonctionnalisation oxydante d'alcanes (le méthane inclus) et, d'autre part, d'élargir l'étude aux complexes de fer dans l'esprit de modeler des enzymes monooxygénases. Deux polyoxomolybdates contenant des atomes de vanadium(V) ont été testés comme catalyseurs...