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Thermodynamics of mixed-ligand complexation of cerium group lanthanide ethylenediaminetetraacetates

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Abstract

The thermodynamic parameters (logK, Δ r G 0, Δ r H, and Δ r S) for mixed-ligand complexation of LnEdta− (Ln3+ = La3+, Ce3+, Pr3+, Nd3+, Sm3+, Gd3+) with iminodiacetate and nitrilotriacetate ions in aqueous solution at 298.15 K and ionic strength I = 0.5 (KNO3) were determined by calorimetry and pH-metry. The variation of the thermodynamic parameters of the reactions over the lanthanide series was discussed.

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Authors and Affiliations

  1. Ivanovo State University, Ivanovo, Russia

    T. S. Krivonogikh, D. F. Pyreu & E. V. Kozlovskii

  2. Ivanovo Institute of the State Firefighting Service, Russian Federation Ministry of Emergencies, Ivanovo, Russia

    E. S. Titova

Authors
  1. T. S. Krivonogikh
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  2. E. S. Titova
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  3. D. F. Pyreu
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  4. E. V. Kozlovskii
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Corresponding author

Correspondence to D. F. Pyreu.

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Original Russian Text © T.S. Krivonogikh, E.S. Titova, D.F. Pyreu, E.V. Kozlovskii, 2011, published in Zhurnal Neorganicheskoi Khimii, 2011, Vol. 56, No. 1, pp. 132–136.

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Krivonogikh, T.S., Titova, E.S., Pyreu, D.F. et al. Thermodynamics of mixed-ligand complexation of cerium group lanthanide ethylenediaminetetraacetates. Russ. J. Inorg. Chem. 56, 128–132 (2011). https://doi.org/10.1134/S0036023611010153

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  • DOI: https://doi.org/10.1134/S0036023611010153

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