Potentiometric investigation on mixed-ligand complexes of some lanthanide and actinide cations with hydroxamic acids and diamines
Joint Authors
Khalil, Muhammad M.
Hasab al-Nabi, Fatimah E.
Source
Issue
Vol. 2, Issue 3 (31 Dec. 2007), pp.275-285, 11 p.
Publisher
Yarmouk University Deanship of Research and Graduate Studies
Publication Date
2007-12-31
Country of Publication
Jordan
No. of Pages
11
Main Subjects
Abstract EN
The formation of ternary complexes of Th (IV), UO2 (II), Ce (III), and La (III) captions with the monohydroxamic acids: acetohydroxamic acid (Aha), benzohydroxamic acid (Bha) and salicylhydroxamic acid (Sham) and diamines : ethylenediamine (en), 1,3-diaminopropane (dap), o-phenylenediamine (o-pda), m-phenylenediamine (m-pda) and p-phenylenediamine (p-pda) was studied using pH-metric titrations at 25 °C and I = 0.10 (NaNO3) in aqueous medium.
The stability constants of normal ternary complexes for all the systems studied were evaluated.
In the case of dap, protonated binary and ternary complexes could be detected and the corresponding stability constants were determined at the same experimental conditions.
Except in the case of aliphatic diamines, there is a good correlation between the basicity of the ligands investigated, and stability of 1 : 1 binary complexes.
Potentiometric measurements show that ternary complexes are formed in a stepwise manner.
The order of stability of the ternary complexes in terms of the nature of hydroxamic acid, diamine, and metal ion was investigated and discussed.
The relative stability of the mixed-ligand complex was compared with that of the binary complex.
In addition, evaluation of the effect of temperature on both the ionization process of the ligands and complex formations for metal-Aha-en and metal-Sham-en ternary systems was studied.
The thermodynamic parameters were calculated and discussed.
American Psychological Association (APA)
Khalil, Muhammad M.& Hasab al-Nabi, Fatimah E.. 2007. Potentiometric investigation on mixed-ligand complexes of some lanthanide and actinide cations with hydroxamic acids and diamines. Jordan Journal of Chemistry،Vol. 2, no. 3, pp.275-285.
https://search.emarefa.net/detail/BIM-276868
Modern Language Association (MLA)
Khalil, Muhammad M.& Hasab al-Nabi, Fatimah E.. Potentiometric investigation on mixed-ligand complexes of some lanthanide and actinide cations with hydroxamic acids and diamines. Jordan Journal of Chemistry Vol. 2, no. 3 (Dec. 2007), pp.275-285.
https://search.emarefa.net/detail/BIM-276868
American Medical Association (AMA)
Khalil, Muhammad M.& Hasab al-Nabi, Fatimah E.. Potentiometric investigation on mixed-ligand complexes of some lanthanide and actinide cations with hydroxamic acids and diamines. Jordan Journal of Chemistry. 2007. Vol. 2, no. 3, pp.275-285.
https://search.emarefa.net/detail/BIM-276868
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 285
Record ID
BIM-276868