Cationic Self-diffusion in Solid Choline Perchlorate Studied by 1H NMR

Hiroyuki Ishida, Masakazu Kato, Hiroshi Ono, Ryuichi Ikeda

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The 1H spin-lattice and spin-spin relaxation times, and the second moment of the 1 H NMR linewidth of choline perchlorate,[(CH3)3NCH2CH2OH]CLO4 were measured in its highest-temperature solid phase, i. e. above 275 K. X-ray powder patterns taken at ca. 380 K revealed that in this phase the crystal has a CsCl-type cubic structure (a = 6.326(4) Å and Z = 1). From 1H NMR experiments it was found that the cations in this phase undergo isotropic rotation and translational self-diffusion. From the 1H T| measurements, the activation energies of the cationic rotation and self-diffusion were evaluated to be 21.4 ± 0.4 and 62 ± 3 kJ mol-1, respectively.

Original languageEnglish
Pages (from-to)637-639
Number of pages3
JournalZeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume52
Issue number8-9
DOIs
Publication statusPublished - Sep 1997

Keywords

  • Crystal structure;
  • Ionic plastic phase;
  • Nuclear magnetic resonance
  • Self-diffusion;

ASJC Scopus subject areas

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

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