Bathula, Srikanth and Kotra, Krishna K. (2019) Ternary complexes of essential metal ions with L - Arginine and Succinic Acid in cationic surfactant medium. International Journal of Advanced Engineering Research and Science, 6 (3). pp. 306-314. ISSN 2349-6495
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Abstract
Chemical speciation of ternary complexes MLX, ML2X and MLXH formed by Co(II), Ni(II), Cu(II) and Zn(II) with L-arginine as primary ligand (L) and succinic acid as secondary ligand (X) was studied in various concentrations (0.0-2.5% w/v) of cationic surfactant
solution maintaining an ionic strength of 0.16 mol dm-3
(NaNO3) at 303K. Titrations were carried out in the
presence of different relative concentrations (M: L: X
=1:2:2, 1:2:4, 1:4:2) of metal to L-arginine to succinic acid with sodium hydroxide as titrant. The observed extra
stability of ternary complexes compared to their binary
complexes was explained based on the electrostatic
interactions of the side chains of the ligands, charge
neutralization, chelate effect, stacking interactions and
hydrogen bonding. The trend in log β values with mole
fraction of the surfactant and distribution diagrams were
presented. Structures of plausible ternary complexes were
also presented.
| Item Type: | Journal Article |
|---|---|
| Uncontrolled Keywords: | Ternary complexes, L-arginine, succinic acid, essential metals, cationic surfactant. |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Science, Technology and Environment (FSTE) > School of Biological and Chemical Sciences |
| Depositing User: | Krishna Kotra |
| Date Deposited: | 07 Apr 2019 23:49 |
| Last Modified: | 07 Apr 2019 23:49 |
| URI: | https://repository.usp.ac.fj/id/eprint/11460 |
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