Structure, NMR spectra, ionic mobility and phase transitions in complex fluoride zirconates

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Abstract

The brief review presents the results of ion-transport properties studies of zirconium fluoride complexes with alkali cations and ammonium. The relationship between the structure (dimensionality) of the compound, the degree of doping and the nature of the dopant metal, the presence and nature of phase transitions, the shape of the NMR spectra, ionic mobility and conductivity of these compounds is considered.

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А. B. Slobodyuk

Institute of Chemistry, FEB RAS

Author for correspondence.
Email: ampy@ich.dvo.ru
ORCID iD: 0000-0002-1363-493X

Candidate of Sciences in Chemistry, Senior Researcher

Russian Federation, Vladivostok

N. A. Didenko

Institute of Chemistry, FEB RAS

Email: ndidenko@ich.dvo.ru
ORCID iD: 0009-0007-4663-4702

Researcher

Russian Federation, Vladivostok

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2. Fig. 1. NMR spectra 1H of the initial and doped ammonium heptafluorozirconate with temperature variations

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3. Fig. 2. Dependence of the ionic conductivity σ on the composition of the cationic sublattice of solid solutions (NH4)xRb3–xZrF7

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4. Fig. 3. Fragment of the crystal structure of the compound (NH4)2ZrF6

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5. Fig. 4. Temperature dependences of ionic conductivity for samples (NH4)6KHf4F23 and (NH4)6KZr4F23

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6. Fig. 5. NMR spectra 19F K10LiZr6F35 2H2O (solid lines) and K10LiZr6F35 (dashed lines) at different temperatures

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