1H NMR Study of Ionic Motions in High Temperature Solid Phases of (CH3NH3)2ZnCl4

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Abstract

The reorientation of the tetrahedral complex anion ZnCl42- and the self-diffusion of the cation in (CH3NH3)2ZnCl4 were studied by 1H NMR spin-lattice relaxation time (1H T1) experiments. In the second highest-temperature phase, the temperature dependence of 1H t1 observed at 8.5 MHz could be explained by a magnetic dipolar-electric quadrupolar cross relaxation between 1H and chlorine nuclei, and the activation energy of the anion motion was determined to be 105 kJ mol-1. In the highest-temperature phase, the activation energy of the self-diffusion of the cation was determined to be 58 kJ mol-1 from the temperature and frequency dependence of 1H T1.

Original languageEnglish
Pages (from-to)412-414
Number of pages3
JournalZeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume55
Issue number3-4
DOIs
Publication statusPublished - Apr 2000

Keywords

  • (CHNH)ZnCl
  • Cross Relaxation
  • Molecular Motion
  • Nuclear Magnetic Resonance

ASJC Scopus subject areas

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

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