Potentiometric and spectroscopic (EPR, CD and absorption spectra) studies were performed on two systems VO(IV)-di-D-galacturonic acid and VO(IV)-tri-D-galacturonic acid. The carboxylate function was shown to act as an anchor binding site. The adjacent deprotonated hydroxyl group co-ordinates to close the chelate ring. The bulky ligands protect the formation of the bis-complexes and therefore at pH above 6 the hydroxyspecies predominate.

POTENTIOMETRIC AND SPECTROSCOPIC STUDIES OF THE COMPLEX-FORMATION BETWEEN VANADYL IONS AND DI-GALACTONURIC AND TRI-GALACTURONIC ACIDS / JEZOWSKA BOJCZUK, M; Bal, W; Micera, Giovanni; Kozlowski, H.. - In: BULLETIN OF THE POLISH ACADEMY OF SCIENCES-CHEMISTRY. - ISSN 0239-7285. - 42:2(1994), pp. 181-189.

POTENTIOMETRIC AND SPECTROSCOPIC STUDIES OF THE COMPLEX-FORMATION BETWEEN VANADYL IONS AND DI-GALACTONURIC AND TRI-GALACTURONIC ACIDS

MICERA, Giovanni;
1994

Abstract

Potentiometric and spectroscopic (EPR, CD and absorption spectra) studies were performed on two systems VO(IV)-di-D-galacturonic acid and VO(IV)-tri-D-galacturonic acid. The carboxylate function was shown to act as an anchor binding site. The adjacent deprotonated hydroxyl group co-ordinates to close the chelate ring. The bulky ligands protect the formation of the bis-complexes and therefore at pH above 6 the hydroxyspecies predominate.
POTENTIOMETRIC AND SPECTROSCOPIC STUDIES OF THE COMPLEX-FORMATION BETWEEN VANADYL IONS AND DI-GALACTONURIC AND TRI-GALACTURONIC ACIDS / JEZOWSKA BOJCZUK, M; Bal, W; Micera, Giovanni; Kozlowski, H.. - In: BULLETIN OF THE POLISH ACADEMY OF SCIENCES-CHEMISTRY. - ISSN 0239-7285. - 42:2(1994), pp. 181-189.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11388/82396
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