Reaktion des Orthovanadinsäure-tri-tert-butylesters mit Monocarbonsäuren / Reaction of Tris-tert-butylorthovanadate with Monocarboxylic Acids

Abstract

Abstract Tris-tert-butylorthovanadate VO(OC4H9)3 undergoes reaction with monocarboxylic acids to yield monomeric VO(OC4H9)(RCOO)2; no VO(OC4H9)2(RCOO) or VO(RCOO)3 could be isolated from the reaction mixture. Polymeric dioxovanadium(V)-monocarbox-ylates(VO2RCOO)n are formed by thermolysis or partial hydrolysis of VO(OC4H9)(RCOO)2; the reaction mechanism is studied and discussed. Syntheses of Ba[VO2(CH3COO)3], Ba[VO2(C2H5COO)3] and N(C4H9)4[V4O8Br(CH3COO)4] are described. All compounds obtained are characterized by IR and 1H NMR spectroscopy as well as by chemical reactions. The carboxyl groups are mostly acting as bidentate ligands.