Propriedades vibracionais dos cristais de aminoácido valina nas configurações L e DL

Abstract

In this work the vibracional properties of the valine (C₅H₁₁NO₂) amino acids crystal in the form L and DL were studied. The crystals were obtained by the growth technique under slow evaporation. Raman spectroscopy measurements at room temperature were performed in the spectral region between 100 𝑐𝑚−¹ e 3200 𝑐𝑚−¹. An attempt to classify the observed vibrational bands is performed by direct comparison between the two spectra of L and DL – valine and other amino acids, especially those of branched chain studied in previous works.