Article,
Raman scattering studies of monohydrated L-asparagine
BRAZILIAN JOURNAL OF PHYSICS, 29 (2): 380-387 (1999)
DOI: 10.1590/S0103-97331999000200019
Abstract
Polarized first-order Raman scattering studies at 300 K were carried out
in L - asparagine monohydrate crystal in order to obtain the general
assignment of its phonon spectra. A careful analysis of the vibrational
spectra shows that the assignment of the fundamental vibrational modes
can be done on the basis of amino, carboxilic and water groups
vibrations, and correlations with previous data reported for other amino
acids. However, some vibrations were correctly assigned from the study
of its temperature - dependence behavior performed in the range 10 - 300
K. The assignment proposed confirm the zwitterionic structure of
L-asparagine monohydrate crystal.
