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Russian Journal of Physical Chemistry A

, Volume 92, Issue 5, pp 909–917 | Cite as

Formation of Mixed-Ligand Complexes of Metals(II) with Monoamine Complexones and Amino Acids in Solution

  • D. F. Pyreu
  • S. N. Gridchin
Physical Chemistry of Solutions
  • 25 Downloads

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.

Keywords

mixed-ligand complexation monoamine complexones amino acids calorimetry denticity 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Ivanovo State UniversityIvanovoRussia
  2. 2.Ivanovo State University of Chemistry and TechnologyIvanovoRussia

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