Thermodynamics of mixed-ligand complexation of gadolinium ethylenediaminetetraacetate with amino acids in aqueous solution

被引：1

作者：

Krivonogikh, T. S. ^{[1
]}

Pyreu, D. F. ^{[1
]}

Kozlovskii, E. V. ^{[1
]}

机构：

[1] Ivanovo State Univ, Ivanovo 153377, Russia

来源：

RUSSIAN JOURNAL OF COORDINATION CHEMISTRY | 2010年 / 36卷 / 07期

关键词：

MAGNETIC-RESONANCE; STEP DISSOCIATION; ASPARTIC-ACID; LANTHANIDE; EDTA; NTA; MRI; STABILITY; CONSTANTS; GLYCINE;

D O I：

10.1134/S1070328410070134

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Mixed-ligand complexation of GdEdta(-) with glycinate, L-glutamate, DL-aspartate, iminodiacetate, and nitrilotriacetate anions in aqueous solutions at 298.15 K and the ionic strength I = 0.5 (KNO(3)) was studied. The thermodynamic parameters (logK, Delta (r) G, Delta (r) H, Delta (r) S) of these reactions were determined from calorimetric and pH-metric data. The most probable way of coordination of the amino acids in the heteroleptic complexes is discussed.

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页码：552 / 557

页数：6

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