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Mixed Ligand Complexes of Transition Metal Ions with Selective Bio-Ligands in Surfactant-Water Mixtures

Bathula, Srikanth and Kotra, Krishna K. (2019) Mixed Ligand Complexes of Transition Metal Ions with Selective Bio-Ligands in Surfactant-Water Mixtures. International Journal of Recent Technology and Engineering, 8 (2S11). pp. 3182-3190. ISSN 2277-3878

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    Abstract

    Chemical speciation of ternary complexes of L-arginine and L-aspartic acid with essential transition metal ions was studied pH metrically. The following MLX, MLXH and ML2X ternary species are detected and reported in this paper. The existence of different ternary species is established from modeling studies using the computer program MINIQUAD75. The relative concentrations (M: L: X=1:2:2, 1:2:4, 1:4:2) and stabilities of the ternary species are compared with those of binary species. The extra stability associated with the ternary complexes is attributed to factors such as charge neutralization, chelate effect, stacking interactions and hydrogen bonding. Trend in variation of stability constants with the change in the mole fraction of the surfactant in various micellar media is explained on the basis of electrostatic and non-electrostatic forces. Distribution diagrams in relation to pH and plausible structures were presented.

    Item Type: Journal Article
    Additional Information: Publisher (Blue Eyes Intelligence Engineering & Sciences Publication) is blacklisted
    Uncontrolled Keywords: Chemical speciation; ternary complexes; surfactants; MINIQUAD75, arginine, aspartic acid
    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: 03 Dec 2019 16:46
    Last Modified: 03 Dec 2019 16:46
    URI: http://repository.usp.ac.fj/id/eprint/11844
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