Biopolymers and cell. 1991. Volume 7. № 6. 48 - 57

BOTTE T. L., DOVBESHKO G. I., LITVINOV G. S.

Aminoacid Vibrational Spectra in Low Frequency Region

Summary

    Vibrational spectra of aminoacid single crystals of a-glydne, (5-alanine, L-histidine, DL-tryptophane in the range of 10—400 cm-1 have been investigated. Vibrations were investigated by IR absorption and Raman scattering methods. In. IR spectra the intensive wide-band absorption was discovered. Relatively narrow bands whose number is in agreement with calculations or slightly exceeding them were regis¬tered against its background. In Raman spectra the number of the bands observed is significantly exceeding the calculated one obtained by X-ray structural analysis for ideal crystals. A number of vibrations have been observed by us for the first time. The analysis of the vibrations under study and their assignment to inter- and intramolecular modes was-carried out.