Complex formation between aluminium(III) and two pyridine derivatives: 2-hydroxynicotinic and 3-hydroxypicolinic acid

Authors
Di Marco, VB Tapparo, A Bertani, R Bombi, GG
Citation
Vb. Di Marco et al., Complex formation between aluminium(III) and two pyridine derivatives: 2-hydroxynicotinic and 3-hydroxypicolinic acid, ANN CHIM, 89(7-8), 1999, pp. 535-546
Citations number
20
Categorie Soggetti
Chemistry
Journal title
ANNALI DI CHIMICA
ISSN journal
00034592 → ACNP
Volume
89
Issue
7-8
Year of publication
1999
Pages
535 - 546
Database
ISI
SICI code
0003-4592(199907/08)89:7-8<535:CFBAAT>2.0.ZU;2-Q
Abstract
The chemical interactions between aluminium(III) and two pyridinic ligands of possible biological relevance, 2-hydroxynicotinic acid (HNic) and 3-hydr oxypicolinic acid (HPic), in aqueous 0.6m (Na)Cl at 25 degrees C, have been investigated by means of potentiometric titrations. In both cases only mon onuclear complexes and their deprotonation products are formed. The qualita tive and quantitative results obtained have been confirmed in part by UV-sp ectrophotometry and H-1 NMR spectroscopy.