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Abstract <p>A series of ZnZrF<sub>6</sub>·<i>n</i>H<sub>2</sub>O (<i>n</i>&#xa0;=&#xa0;6, 5, 4, 2, 0) hexafluorozirconates is studied by <sup>19</sup>F, <sup>1</sup>H NMR. Assignments are made for the obtained <sup>19</sup>F MAS NMR signals. Behavior of the shape of NMR spectra and positions of their signals upon structural changes is considered depending on the composition and hydration degree of the cation. The obtained data are compared with known NMR data for fluorozirconates. The shapes of broad lines of the recorded spectra are analyzed, and their temperature dependence as a result of reorientational motions of water molecules (<i>n</i>&#xa0;=&#xa0;2, 5), <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\text{ZrF}_{ 6}^{2-}\)</EquationSource> </InlineEquation> ions (<i>n</i>&#xa0;=&#xa0;6), and ZnF<sub>2</sub>(H<sub>2</sub>O)<sub>4</sub> ions (<i>n</i>&#xa0;=&#xa0;4) is considered.</p>

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Structure and 19F, 1H NMR Spectra of Zinc Hexafluorozirconate Hydrates

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • A. B. Slobodyuk,
  • M. M. Polyantsev,
  • N. A. Didenko

摘要

Abstract

A series of ZnZrF6·nH2O (n = 6, 5, 4, 2, 0) hexafluorozirconates is studied by 19F, 1H NMR. Assignments are made for the obtained 19F MAS NMR signals. Behavior of the shape of NMR spectra and positions of their signals upon structural changes is considered depending on the composition and hydration degree of the cation. The obtained data are compared with known NMR data for fluorozirconates. The shapes of broad lines of the recorded spectra are analyzed, and their temperature dependence as a result of reorientational motions of water molecules (n = 2, 5), \(\text{ZrF}_{ 6}^{2-}\) ions (n = 6), and ZnF2(H2O)4 ions (n = 4) is considered.