Formation of Mixed-Ligand Complexes of Metals(II) with Monoamine Complexones and Amino Acids in Solution
- Authors: Pyreu D.F.1, Gridchin S.N.2
-
Affiliations:
- Ivanovo State University
- Ivanovo State University of Chemistry and Technology
- Issue: Vol 92, No 5 (2018)
- Pages: 909-917
- Section: Physical Chemistry of Solutions
- URL: https://journals.rcsi.science/0036-0244/article/view/169997
- DOI: https://doi.org/10.1134/S0036024418050254
- ID: 169997
Cite item
Abstract
The formation of mixed-ligand complexes in the M(II)–Nta, Ida–L (M = Cu(II), Ni, Zn, Co(II), L = Ser, Thr, Asp, Arg, Asn) systems, where Ida and Nta are the residues of iminodiacetic and nitrilotriacetic acids, respectively, is studied using pH measurements, calorimetry and spectrophotometry. The thermodynamic parameters (logK, ΔrG0, ΔrH, ΔrS) of their formation at 298.15 K and ionic strength I = 0.5 (KNO3) are determined. The most likely scenario of amino acid residue coordination in the composition of mixed complexes is discussed.
About the authors
D. F. Pyreu
Ivanovo State University
Author for correspondence.
Email: pyreu@mail.ru
Russian Federation, Ivanovo, 153025
S. N. Gridchin
Ivanovo State University of Chemistry and Technology
Email: pyreu@mail.ru
Russian Federation, Ivanovo, 153000