Ionic Mobility, Phase Transitions, and Electric Conductivity in Ammonium Tetrafluoroantimonate and Heptafluorodiantimonate(III)期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Ionic Mobility, Phase Transitions, and Electric Conductivity in Ammonium Tetrafluoroantimonate and Heptafluorodiantimonate(III)

Authors:	V Ya Kavun V I Sergienko N I Sorokin L A Zemnukhova T A Kaidalova E B Merkulov

Institution:	(1) Far East Branch, Russian Academy of Sciences, Institute of Chemistry, Vladivostok;(2) Russian Academy of Sciences, A. V. Shubnikov Institute of Crystallography, Moscow

Abstract:	The dynamics of the fluoride and proton sublattices and the electrophysical properties of NH₄SbF₄ (I) and NH₄Sb₂F₇ (II) in the temperature range 210-435 K were studied by ¹⁹F and ¹H NMR and impedance spectroscopy. Types of ionic motion were determined and their activation energies were estimated. The structural phase transitions in I and II form the high-temperature modifications -NH₄SbF₄ and -NH₄Sb₂F₇, having high ionic (superionic) conductivity in the range 425-435 K (1.9-1.5×10^-3 S/cm).

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