Potentiometric and spectroscopic studies on oxovanadium(IV) complexes of salicylic acid and catechol and some derivatives

Malgorzata Jezowska-Bojczuk, Henryk Kozłowski, András Zubor, T. Kiss, Mario Branca, Giovanni Micera, Alessandro Dessì

Research output: Contribution to journalArticle

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Abstract

The interaction of oxovanadium(IV) with ligands containing phenolate and carboxylate donors, such as salicylic acid, catechol, 2,x-dihydroxybenzoic acids (x = 3-6), and 3,4-dihydroxybenzoic acid has been studied in aqueous solution by means of potentiometric and spectroscopic (electronic absorption, e.s.r., and electron nuclear double resonance) techniques. Over the low pH range the salicyclic acid-type mode of co-ordination predominates, while the catechol type is preferred in basic media. A mixture of these donor sets is observed in the ternary oxovanadium(IV)-salicylic acid-catechol and binary oxovanadium(IV)-2,3- dihydroxybenzoic acid systems. Besides monomeric complexes, dinuclear species are also formed by the potentially ambidentate dihydroxybenzoic acid derivatives over the intermediate pH range. In the latter complexes both CO 2 - and O- groups take part in metal bridging.

Original languageEnglish
Pages (from-to)2903-2907
Number of pages5
JournalJournal of the Chemical Society, Dalton Transactions
Issue number9
DOIs
Publication statusPublished - 1990

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Salicylic Acid
Derivatives
Acids
Carbon Monoxide
Metals
Ligands
Electrons
oxovanadium IV
catechol

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Potentiometric and spectroscopic studies on oxovanadium(IV) complexes of salicylic acid and catechol and some derivatives. / Jezowska-Bojczuk, Malgorzata; Kozłowski, Henryk; Zubor, András; Kiss, T.; Branca, Mario; Micera, Giovanni; Dessì, Alessandro.

In: Journal of the Chemical Society, Dalton Transactions, No. 9, 1990, p. 2903-2907.

Research output: Contribution to journalArticle

Jezowska-Bojczuk, Malgorzata ; Kozłowski, Henryk ; Zubor, András ; Kiss, T. ; Branca, Mario ; Micera, Giovanni ; Dessì, Alessandro. / Potentiometric and spectroscopic studies on oxovanadium(IV) complexes of salicylic acid and catechol and some derivatives. In: Journal of the Chemical Society, Dalton Transactions. 1990 ; No. 9. pp. 2903-2907.
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AU - Kiss, T.

AU - Branca, Mario

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AU - Dessì, Alessandro

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