STUDIES ON LIGAND-LIGAND INTERACTIONS - FORMATION AND STABILITY OF PROTON-DIETHYLENETRIAMINE-CARBOXYLIC LIGAND COMPLEXES IN AQUEOUS-SOLUTION

Authors
DESTEFANO C FOTI C GIANGUZZA A
Citation
C. Destefano et al., STUDIES ON LIGAND-LIGAND INTERACTIONS - FORMATION AND STABILITY OF PROTON-DIETHYLENETRIAMINE-CARBOXYLIC LIGAND COMPLEXES IN AQUEOUS-SOLUTION, Annali di chimica, 85(1-2), 1995, pp. 77-85
Citations number
31
Categorie Soggetti
Chemistry Analytical","Environmental Sciences
Journal title
Annali di chimica → ACNP
ISSN journal
00034592
Volume
85
Issue
1-2
Year of publication
1995
Pages
77 - 85
Database
ISI
SICI code
0003-4592(1995)85:1-2<77:SOLI-F>2.0.ZU;2-0
Abstract
The formation of mixed proton- diethylenetriamine-carboxylic ligand (a cetate, malonate, 1,2,3-propanetricarboxylate, citrate, 1,2,3,4-butane tetracarboxylate) complexes has been studied potentiometrically in aqu eous solution, at T = 25 degrees C. Least squares calculations showed that mixed species of the general formula (dien)LH(r) [in which: r = 1 ,2...(m+1); m is the maximum degree of protonation for carboxylate L], are formed. A diacetate species, namely (dien)(ac)(2)H-3, was also fo und. The stability of these complexes is discussed in comparison with similar systems.