Raman studies of orientational disorder in crystals: The hexamethylethane plastic phase, T> Tc=152 K

✍ Scribed by H. Gharbi; J. L. Sauvajol; H. Fontaine; M. More

• Publisher: John Wiley and Sons
• Year: 1985
• Tongue: English
• Weight: 710 KB
• Volume: 16
• Category: Article
• ISSN: 0377-0486
• DOI: 10.1002/jrs.1250160203

✦ Synopsis

Abstract

Raman spectra of some bands in the plastic phase of hexamethylethane have been recorded as a function of temperature. Interesting features related to the molecular reorientations and librations have been derived from the band shape analysis of F~2g~ and E~g~ low‐frequency spectra. A novel temperature dependence of the libration width has been observed. The analysis of the internal modes' bandwidths at ν~1~ = 878 cm^−1^ and ν~2~ = 475 cm^−1^ provides consistent results for the monomolecular reorientational dynamics.