Raman scattering ofL-valine crystals

Single crystals Of L-valine, C5H11O2N, have been studied by Raman spectroscopy at temperatures from 17 to 300 K over the spectral range 20-3300 cm(-1). A tentative assignment of the bands is given. Careful analysis of the Raman spectra suggests that a series of changes in the low-wavenumber region may be associated with a phase transition undergone by the material, and this possibility is discussed. Copyright (c) 2005 John Wiley & Sons, Ltd.