Abstract
Complexation between ethylenediamine-N,N'-disuccinic acid (Н4Y, EDDS) and Er3+, Yb3+, and Lu3+ ions in aqueous solutions is studied by calorimetry and pH measurements. The thermodynamic parameters (logK, ΔrG, ΔrH, and Δr S) of formation of LnY–and LnHY complexes at 298.15 K and ionic strength I = 0.5(KNO3) are determined. Changes in the thermodynamic parameters of reactions while moving along the lanthanide series are discussed.
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Original Russian Text © A.I. Lytkin, N.V. Chernyavskaya, A.S. Chernov, O.N. Krutova, V.E. Litvinenko, 2016, published in Zhurnal Neorganicheskoi Khimii, 2016, Vol. 61, No. 12, pp. 1683–1686.
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Lytkin, A.I., Chernyavskaya, N.V., Chernov, A.S. et al. Thermodynamics of complexation of yttrium-family lanthanide ethylenediamine disuccinates at 298.15 K. Russ. J. Inorg. Chem. 61, 1620–1623 (2016). https://doi.org/10.1134/S0036023616120111
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DOI: https://doi.org/10.1134/S0036023616120111