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Raman scattering ofL-valine crystals

2005; Wiley; Volume: 36; Issue: 11 Linguagem: Inglês

10.1002/jrs.1410

1097-4555

J.A. Lima, Paulo Freire, R. J. C. Lima, A. Moreno, J. Mendes Fílho, F. E. A. Melo,

Nonlinear Optical Materials Research

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 © 2005 John Wiley & Sons, Ltd.