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Synthesis and complex study of potassium ammonium hexafluorozirconates: Ion mobility, phase transitions, and ionic conductivity in K2−n (NH4)nZrF6 compounds as probed by NMR, DTA, and impedance spectroscopy

  • Synthesis and Properties of Inorganic Compounds
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Abstract

The mobility of the fluoride and ammonium ions (180–480 K) in K2−n (NH4)nZrF6 compounds (0.2 ≤ n ≤ 1.80) has been studied by 19F and 1H NMR. Correlations between the composition of the cationic sublattice, the character of ion motions, and the phase-transition temperature in these compounds have been established. The high-temperature modifications of compounds with n ≥ 1 are characterized by translational diffusion of ions in the fluoride and ammonium sublattices, and their 19F NMR spectra are characterized by uniaxial chemical shift anisotropy. The electrophysical properties of these compounds are studied in the range 300–480 K.

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Authors and Affiliations

  1. Institute of Chemistry, Far East Division, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok, 690022, Russia

    V. Ya. Kavun, N. A. Didenko, A. V. Gerasimenko, A. B. Slobodyuk, I. A. Tkachenko & V. I. Sergienko

  2. Institute of Solid-State Chemistry and Mechanochemistry, Siberian Division, Russian Academy of Sciences, ul. Kutateladze 18, Novosibirsk, 630128, Russia

    N. F. Uvarov

Authors
  1. V. Ya. Kavun
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  2. N. A. Didenko
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  3. A. V. Gerasimenko
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  4. A. B. Slobodyuk
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  5. I. A. Tkachenko
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  6. N. F. Uvarov
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  7. V. I. Sergienko
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Additional information

Original Russian Text © V.Ya. Kavun, N.A. Didenko, A.V. Gerasimenko, A.B. Slobodyuk, I.A. Tkachenko, N.F. Uvarov, V.I. Sergienko, 2006, published in Zhurnal Neorganicheskoi Khimii, 2006, Vol. 51, No. 4, pp. 565–572.

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Kavun, V.Y., Didenko, N.A., Gerasimenko, A.V. et al. Synthesis and complex study of potassium ammonium hexafluorozirconates: Ion mobility, phase transitions, and ionic conductivity in K2−n (NH4)nZrF6 compounds as probed by NMR, DTA, and impedance spectroscopy. Russ. J. Inorg. Chem. 51, 513–520 (2006). https://doi.org/10.1134/S0036023606040012

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  • DOI: https://doi.org/10.1134/S0036023606040012

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