Thermodynamics of mixed-ligand complexation of gadolinium ethylenediaminetetraacetate with amino acids in aqueous solution |
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Authors: | T S Krivonogikh D F Pyreu E V Kozlovskii |
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Institution: | 1.Ivanovo State University,Ivanovo,Russia |
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Abstract: | 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 (KNO3) was studied. The thermodynamic parameters (logK, Δ
r
G, Δ
r
H, Δ
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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Keywords: | |
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