Abstract
Gibbs energies of formation have been determined by conductometric titration for hydroxo complexes of cerium, samarium, europium, erbium, ytterbium, and yttrium. All these elements form monohydroxo complexes; yttrium, erbium, and terbium also form dihydroxo complexes. The Gibbs energies of formation of lanthanide hydroxo complexes from ions have virtually equal values of −47.3 ± 0.6 kJ/mol monohydroxo complexes and −44.5 ± 0.5 kJ/mol for dihydroxo complexes, respectively. These values were used to estimate the Gibbs energies of formation of hydroxo complexes for the entire lanthanide series.
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Original Russian Text © D.E. Chirkst, O.L. Lobacheva, I.V. Berlinskii, N.V. Dzhevaga, 2012, published in Zhurnal Neorganicheskoi Khimii, 2012, Vol. 57, No. 4, pp. 670–674.
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Chirkst, D.E., Lobacheva, O.L., Berlinskii, I.V. et al. Thermodynamics of formation of lanthanide hydroxo complexes in aqueous solutions. Russ. J. Inorg. Chem. 57, 605–609 (2012). https://doi.org/10.1134/S0036023612040067
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DOI: https://doi.org/10.1134/S0036023612040067