Zusammenfassung
This work reports a temperature-dependent vibrational spectroscopic
study of the sorbic acid (C6H8O2), as well as the mode assignment at
ambient conditions, based on the density functional theory.
Temperature-dependent vibrational properties have been performed in
polycrystalline sorbic acid through both Raman and infrared spectroscopy
in the 20-300 K and 80-300 K temperature ranges, respectively. These
studies present the occurrence of some modifications in the Raman
spectra that could be interpreted as a low temperature phase transition
undergone by sorbic acid from the monoclinic phase to an unknown phase
with conformational change of the molecules in the unit cell. (C) 2014
Elsevier B.V. All rights reserved.
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