Thermodynamic and NMR studies of mixed-ligand complex formation of mercury (II) ethylenediaminetetraacetate with dipeptides in solution

被引：1
|
作者：
Pyreu, Dmitrii [1 ]
Kozlovskii, Eugenii [1 ]
Gruzdev, Matvei [2 ]
Kumeev, Roman [2 ]
机构：
[1] Ivanovo State Univ, Dept Inorgan & Analyt Chem, Ivanovo 153025, Russia
[2] Inst Solut Chem, Ivanovo, Russia
来源：
INORGANICA CHIMICA ACTA | 2013年 / 394卷
关键词：
Mixed-ligand complex; Mercury (II) ethylenediaminetetraacetate; Dipeptide; Calorimetry; NUCLEAR-MAGNETIC-RESONANCE; METAL-PEPTIDE COMPLEXES; AQUEOUS-SOLUTION; COPPER(II) COMPLEXES; EQUILIBRIUM; GLYCYLGLYCINE; OLIGOPEPTIDES; GLUTATHIONE; HISTIDINE; CYSTEINE;
D O I：
10.1016/j.ica.2012.09.015
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
pH-potentiometry, calorimetry and H-1 and C-13 NMR spectroscopy have been used to study the mixed-ligand complex formation in the systems Hg2+-Edta(4) -L (L = GlyGly, AlaAla) in aqueous solution at 298.15 K and ionic strength of I = 0.5 (KNO3). The thermodynamic parameters of formation of the HgEdtaL(3), and HgEdtaLH(-1)(-4) complexes have been determined. The most probable coordination mode for the complexone and the dipeptide in the mixed-ligand complexes was discussed. (C) 2012 Elsevier B. V. All rights reserved.
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页码：685 / 690
页数：6
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