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Simulation models of the nearest environment of ions in aqueous gadolinium chloride solutions

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Abstract

The structure of aqueous gadolinium chloride solutions is studied within a broad concentration range under the standard conditions. The simulation approach is used to analyze experimental X-ray diffraction data; the structural parameters of the nearest environment of ions were determined in the solutions under study. The gadolinium ion in saturated and concentrated solutions is found to form a rigid hydration sphere consisting of six water molecules; further dilution can result in additional incorporation of up to 2.64 solvent molecules in the long-range environment. Thus, the average coordination number of gadolinium in dilute solutions is 8.6. The cation also forms a second coordination sphere. Non-contact ion associates are typical for all the systems under study.

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Authors and Affiliations

  1. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, Ivanovo, Russia

    P. R. Smirnov

  2. Ivanovo State University of Chemistry and Technology, Ivanovo, Russia

    I. L. Kritskii & O. V. Grechin

Authors
  1. P. R. Smirnov
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  2. I. L. Kritskii
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  3. O. V. Grechin
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Corresponding author

Correspondence to P. R. Smirnov.

Additional information

Original Russian Text © P.R. Smirnov, I.L. Kritskii, O.V. Grechin, 2015, published in Zhurnal Neorganicheskoi Khimii, 2015, Vol. 60, No. 11, pp. 1546–1550.

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Smirnov, P.R., Kritskii, I.L. & Grechin, O.V. Simulation models of the nearest environment of ions in aqueous gadolinium chloride solutions. Russ. J. Inorg. Chem. 60, 1415–1418 (2015). https://doi.org/10.1134/S0036023615110157

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  • DOI: https://doi.org/10.1134/S0036023615110157

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