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Oxovanadium(IV) complexes of citric and tartaric acids in aqueous solution

Kiss, Tamás and Buglyó, Péter and Sanna, Daniele and Micera, Giovanni and Decock, Patrick and Dewaele, Dorothée (1995) Oxovanadium(IV) complexes of citric and tartaric acids in aqueous solution. Inorganica Chimica Acta, Vol. 239 (1-2), p. 145-153. ISSN 0020-1693. Article.

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DOI: 10.1016/0020-1693(95)04750-6

Abstract

The complex-formation processes taking place in the systems containing VO(IV) and D-, L-, DL- or meso-tartaric acid or citric acid in aqueous solution were re-examined by combined use of pH potentiometry and spectroscopic (EPR and electronic absorption) methods. The results allowed a full characterization of the dinuclear species existing in the VO(IV)-D-, L- and DL--tartrate systems and indicated a different complexation behaviour in the corresponding meso-tartrate system. As its conformation is unfavourable for dimer formation, the meso ligand yields predominantly cyclic trinuclear species, one of them exhibiting distinctive EPR features. In the VO(IV)-citrate system, dinuclear species with structures different from those of the VO(IV) tartrates are suggested.

Item Type:Article
ID Code:1417
Status:Published
Refereed:Yes
Uncontrolled Keywords:Vanadium complexes, oxo complexes, citric acid complexes, tartaric acid complexes
Subjects:Area 03 - Scienze chimiche > CHIM/03 Chimica generale e inorganica
Divisions:001 Università di Sassari > 01 Dipartimenti > Chimica
Publisher:Elsevier
ISSN:0020-1693
Deposited On:18 Aug 2009 10:05

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