1H and 19F NMR studies on molecular motions in two solid phases of t-butylammonium tetrafluoroborate

Hiroyuki Ishida

doi:10.1515/zna-1998-0912

¹H and ¹⁹F NMR studies on molecular motions in two solid phases of t-butylammonium tetrafluoroborate

Hiroyuki Ishida

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Differential thermal analysis (DTA), differential scanning calorimetry (DSC), and the temperature dependence of the spin-lattice relaxation time (T₁) and the second moment (M₂) of ¹H and ¹⁹F NMR were studied in (CH₃)₃CNH₃BF₄ and (CH₃)₃CND₃BF₄. DTA and DSC revealed a solid-solid phase transition at 219 K for (CH₃)₃CNH₃BF₄ and at 221 K for (CH₃)₃CND₃BF₄. The motions of cations and anions in the two solid phases were studied by T₁ and M₂ experiments. The motional modes of the ions and their motional parameters were determined.

Original language	English
Pages (from-to)	796-800
Number of pages	5
Journal	Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume	53
Issue number	9
DOIs	https://doi.org/10.1515/zna-1998-0912
Publication status	Published - Sep 1998

Keywords

Molecular motion
Nuclear magnetic resonance
Phase transition

ASJC Scopus subject areas

Mathematical Physics
Physics and Astronomy(all)
Physical and Theoretical Chemistry

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abstract = "Differential thermal analysis (DTA), differential scanning calorimetry (DSC), and the temperature dependence of the spin-lattice relaxation time (T1) and the second moment (M2) of 1H and 19F NMR were studied in (CH3)3CNH3BF4 and (CH3)3CND3BF4. DTA and DSC revealed a solid-solid phase transition at 219 K for (CH3)3CNH3BF4 and at 221 K for (CH3)3CND3BF4. The motions of cations and anions in the two solid phases were studied by T1 and M2 experiments. The motional modes of the ions and their motional parameters were determined.",

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AB - Differential thermal analysis (DTA), differential scanning calorimetry (DSC), and the temperature dependence of the spin-lattice relaxation time (T1) and the second moment (M2) of 1H and 19F NMR were studied in (CH3)3CNH3BF4 and (CH3)3CND3BF4. DTA and DSC revealed a solid-solid phase transition at 219 K for (CH3)3CNH3BF4 and at 221 K for (CH3)3CND3BF4. The motions of cations and anions in the two solid phases were studied by T1 and M2 experiments. The motional modes of the ions and their motional parameters were determined.

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KW - Nuclear magnetic resonance

KW - Phase transition

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