Thermodynamics of mixed-ligand complexation of yttrium group lanthanide ethylenediaminetetraacetates

被引：0
|
作者：
T. S. Krivonogikh
D. F. Pyreu
E. V. Kozlovskii
E. S. Titova
机构：
[1] Ministry of Emergencies of the Russian Federation,Ivanovo Institute of State Firefighting Service
[2] Ivanovo State University,undefined
来源：
Russian Journal of Inorganic Chemistry | 2012年 / 57卷
关键词：
Mixed Ligand Complex; Mixed Ligand; Ancillary Ligand; Lanthanide Series; Nitrilotriacetate;
D O I：
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摘要：
Mixed-ligand complexation of yttrium subgroup lanthanide ethylenediaminetetraacetates with asparaginate, iminodiacetate, and nitrilotriacetate ions in aqueous solution was studied by calorimetry and pH-metry. The full set of thermodynamic parameters (logK, ΔrG0, ΔrH, ΔrS) of the addition reactions of Asp2−, Ida2−, and Nta3− to LnEdta− (Ln3+ = Tb3+, Dy3+, Ho3+, Er3+, Tm3+, Yb3+, Lu3+) was determined at 298.15 K and ionic strength I = 0.5(KNO3). The change in the thermodynamic parameters of the reactions over the series of lanthanides was discussed.
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页码：634 / 637
页数：3
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