High-Pressure Raman Study of Liquid and Crystalline CH2F2 up to 29GPa.
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- Youhong Wu
- Department of Electronics and Computer Engineering, Gifu University, 1–1 Yanagido, Gifu 501–11
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- Onomichi Mitsukazu
- College of Medical Sciences, Kumamoto University, 4–24–1 Kuhonji, Kumamoto 826
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- Sasaki Shigeo
- Department of Electronics and Computer Engineering, Gifu University, 1–1 Yanagido, Gifu 501–11
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- Shimizu Hiroyasu
- Department of Electronics and Computer Engineering, Gifu University, 1–1 Yanagido, Gifu 501–11
Bibliographic Information
- Other Title
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- High Pressure Raman Study of Liquid and
- High-Pressure Raman Study of Liquid and Crystalline CH<sub>2</sub>F<sub>2</sub>up to 29 GPa
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Abstract
High-pressure Raman spectra of liquid and crystalline CH2F2 were measured up to 29, GPa at 300, K in a gasketed diamond-anvil cell. Four solid phases have been found; the transition pressures of liquid-solid phase I, phase I-phase II, phase II-phase III and phase III-phase IV were determined to be 2.63, 3.82, 5.9 and 8.2, GPa, respectively. Among these, the solid phase I is an orientationally disordered (plastic) phase. The CH asymmetric stretching ν 6 vibration (B1) splits into the longitudinal optical (LO) mode and the transverse optical (TO) mode in the liquid and four solid phases. The wavenumbers of LO and TO modes and their wavenumber difference remarkably depend on the pressure, and drastically change at each phase transition point. The wavenumber of the CH stretching ν 1 vibration (A1) also shows a strong pressure dependence, and this behavior is compared with those of CHF2Cl and CHF3.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 63 (3), 934-940, 1994
THE PHYSICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390282679156674048
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- NII Article ID
- 210000098532
- 110001956408
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- NII Book ID
- AA00704814
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- BIBCODE
- 1994JPSJ...63..934Y
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 3860640
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed