Self-Diffusion and Reorientation of Methylammonium Ions in (CH3NH3)2ZnCl4Crystals as Studied by 1H-NMR

Hiroyuki Ishida; Tadashi Iwachido; Naomi Hayama; Ryuichi Ikeda; Mifune Terashima; Daiyu Nakamura

doi:10.1515/zna-1989-0811

Self-Diffusion and Reorientation of Methylammonium Ions in (CH₃NH₃)₂ZnCl₄Crystals as Studied by ¹H-NMR

Hiroyuki Ishida, Tadashi Iwachido, Naomi Hayama, Ryuichi Ikeda, Mifune Terashima, Daiyu Nakamura

Research output: Contribution to journal › Article

32 Citations (Scopus)

Abstract

Differential thermal analysis, differential scanning calorimetry, and measurements of the ¹H spin-lattice relaxation times and second moments of ¹H-NMR absorptions were performed on methylammonium tetrachlorozincate(II) crystals over a wide temperature range. A solid-solid phase transition was located at 477 K. From the ¹H-NMR experiments it was found that the cations undergo overall reorientation as well as three dimensional translational self-diffusion in the high-temperature phase. In the low-temperature phase, a 120 reorientational motion of the CH₃ and NH₃⁺groups of the cation about its C - N bond axis was detected. The parameters for the motional modes of the cations in the crystal were evaluated from the analysis of the ¹H-NMR experimental results.

Original language	English
Pages (from-to)	741-746
Number of pages	6
Journal	Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences
Volume	44
Issue number	8
DOIs	https://doi.org/10.1515/zna-1989-0811
Publication status	Published - Aug 1 1989

ASJC Scopus subject areas

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

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Ishida, H., Iwachido, T., Hayama, N., Ikeda, R., Terashima, M., & Nakamura, D. (1989). Self-Diffusion and Reorientation of Methylammonium Ions in (CH₃NH₃)₂ZnCl₄Crystals as Studied by ¹H-NMR. Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences, 44(8), 741-746. https://doi.org/10.1515/zna-1989-0811

Self-Diffusion and Reorientation of Methylammonium Ions in (CH₃NH₃)₂ZnCl₄Crystals as Studied by ¹H-NMR. / Ishida, Hiroyuki; Iwachido, Tadashi; Hayama, Naomi; Ikeda, Ryuichi; Terashima, Mifune; Nakamura, Daiyu.

In: Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences, Vol. 44, No. 8, 01.08.1989, p. 741-746.

Research output: Contribution to journal › Article

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abstract = "Differential thermal analysis, differential scanning calorimetry, and measurements of the 1H spin-lattice relaxation times and second moments of 1H-NMR absorptions were performed on methylammonium tetrachlorozincate(II) crystals over a wide temperature range. A solid-solid phase transition was located at 477 K. From the 1H-NMR experiments it was found that the cations undergo overall reorientation as well as three dimensional translational self-diffusion in the high-temperature phase. In the low-temperature phase, a 120 reorientational motion of the CH3 and NH3+groups of the cation about its C - N bond axis was detected. The parameters for the motional modes of the cations in the crystal were evaluated from the analysis of the 1H-NMR experimental results.",

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