Abstract
DL-lysine hydrochloride crystals were studied by Raman spectroscopy
under hydrostatic pressure using a diamond anvil cell from ambient
pressure up to 9.8 GPa in the spectral range from 1150 to 40 cm(-1).
Changes in the Raman spectrum were observed in all spectral regions
analyzed. In particular, modifications in the lattice modes indicate
that the crystal undergoes a phase transition. The classification of the
vibrational modes, the behavior of their band wavenumber as a function
of the pressure and the reversibility of the phase transitions are also
discussed. (C) 2016 Elsevier B.V. All rights reserved.
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