Croatica Chemica Acta, Vol. 61 No. 3, 1988.
Review article
Orientational Order-Disorder Effects in Molecular Crystals as Evidenced by Low-Frequency Raman Spectra
G. N. Zhizhin
; Institute of Spectroscopy, USSR Academy of Sciences, Troitsk, Moscow region, 142092, USSR
Yu. N. Krasjukov
; Institute of Spectroscopy, USSR Academy of Sciences, Troitsk, Moscow region, 142092, USSR
E. I. Mukhtarov
; Institute of Spectroscopy, USSR Academy of Sciences, Troitsk, Moscow region, 142092, USSR
V. N. Rogovoi
; Institute of Spectroscopy, USSR Academy of Sciences, Troitsk, Moscow region, 142092, USSR
N. V. Sidorov
; Institute of Spectroscopy, USSR Academy of Sciences, Troitsk, Moscow region, 142092, USSR
Abstract
The studies of reorientational motions of molecules in crystals
of organic compounds by low-frequency Raman spectroscopy are
briefly reported. Some examples illustrate the efficiency of the
investigation of order-disorder phenomena in organic crystals by
the temperature dependence of low-frequency vibrational spectra
combined with simultaneous calculations of the molecular dynamics
by the atom-atom potentials (AAP) method. The conditions have been determined which are necessary in order to affect the low-frequency Raman spectra by anisotropy of molecular reorientations in crystals.
Keywords
Hrčak ID:
175968
URI
Publication date:
30.11.1988.
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