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A study of the formation constants of ternary and quaternary complexes of some bivalent transition metals

The formation of hetero-ligand 1:1:1, M(II)-Opda-Sal/Gly ternary and 1:1:1:1, M(II)-Opda-Sal-Gly quaternary complexes, where M(II) = Ni, Cu, Zn and Cd; Opda = o-phenylenediamine, Sal = salicylic acid, Gly = glycine, was studied pH-metrically in aqueous medium. The formation constants for the resulti... Full description

Journal Title: Journal of the Serbian Chemical Society 2010, Vol.75 (1), p.75-82
Main Author: Sharma, Sangita
Other Authors: Dalwadi, Dipika , Neog, Madhurjya
Format: Electronic Article Electronic Article
Language: English
Subjects:
Publisher: Journal of the Serbian Chemical Society
ID: ISSN: 0352-5139
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title: A study of the formation constants of ternary and quaternary complexes of some bivalent transition metals
format: Article
creator:
  • Sharma, Sangita
  • Dalwadi, Dipika
  • Neog, Madhurjya
subjects:
  • formation constants
  • quaternary complexes
  • salicylic acid
  • transition metals
ispartof: Journal of the Serbian Chemical Society, 2010, Vol.75 (1), p.75-82
description: The formation of hetero-ligand 1:1:1, M(II)-Opda-Sal/Gly ternary and 1:1:1:1, M(II)-Opda-Sal-Gly quaternary complexes, where M(II) = Ni, Cu, Zn and Cd; Opda = o-phenylenediamine, Sal = salicylic acid, Gly = glycine, was studied pH-metrically in aqueous medium. The formation constants for the resulting ternary and quaternary complexes were evaluated at a constant ionic strength, m = 0.20 mol dm-3 and temperature, 30+0.1 oC. The order of the formation constants in terms of the metal ion for both type of complexes was found to be Cu(II) > Ni(II) > Zn(II) > Cd(II). This order was explained based on the increasing number of fused rings, the coordination number of the metal ions, the Irving - William order and the stability of various species. The expected species formed in solution were pruned with the Fortran IV program SPEPLOT and the stability of the ternary and quaternary complexes is explained.
language: eng
source:
identifier: ISSN: 0352-5139
fulltext: no_fulltext
issn:
  • 0352-5139
url: Link


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titleA study of the formation constants of ternary and quaternary complexes of some bivalent transition metals
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descriptionThe formation of hetero-ligand 1:1:1, M(II)-Opda-Sal/Gly ternary and 1:1:1:1, M(II)-Opda-Sal-Gly quaternary complexes, where M(II) = Ni, Cu, Zn and Cd; Opda = o-phenylenediamine, Sal = salicylic acid, Gly = glycine, was studied pH-metrically in aqueous medium. The formation constants for the resulting ternary and quaternary complexes were evaluated at a constant ionic strength, m = 0.20 mol dm-3 and temperature, 30+0.1 oC. The order of the formation constants in terms of the metal ion for both type of complexes was found to be Cu(II) > Ni(II) > Zn(II) > Cd(II). This order was explained based on the increasing number of fused rings, the coordination number of the metal ions, the Irving - William order and the stability of various species. The expected species formed in solution were pruned with the Fortran IV program SPEPLOT and the stability of the ternary and quaternary complexes is explained.
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abstractThe formation of hetero-ligand 1:1:1, M(II)-Opda-Sal/Gly ternary and 1:1:1:1, M(II)-Opda-Sal-Gly quaternary complexes, where M(II) = Ni, Cu, Zn and Cd; Opda = o-phenylenediamine, Sal = salicylic acid, Gly = glycine, was studied pH-metrically in aqueous medium. The formation constants for the resulting ternary and quaternary complexes were evaluated at a constant ionic strength, m = 0.20 mol dm-3 and temperature, 30+0.1 oC. The order of the formation constants in terms of the metal ion for both type of complexes was found to be Cu(II) > Ni(II) > Zn(II) > Cd(II). This order was explained based on the increasing number of fused rings, the coordination number of the metal ions, the Irving - William order and the stability of various species. The expected species formed in solution were pruned with the Fortran IV program SPEPLOT and the stability of the ternary and quaternary complexes is explained.
pubJournal of the Serbian Chemical Society
doi10.2298/JSC1001075S
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