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Hydrogen bonds in crystalline D-alanine: diffraction and spectroscopic evidence...
Belo, Ezequiel de Andrade; Pereira, Jose Enedilton Medeiros; Freire, Paulo de Tarso Cavalcante; Argyriou, Dimitri N.; Eckert, JuergenEnantiomeric amino acids have specific physiological functions in complex biological systems. Systematic studies focusing on the solid-state properties of d-amino acids are, however, still limited. To shed light on this field, structural and spectroscopic studies of d-alanine using neutron powder diffraction, polarized Raman scattering and ab initio calculations of harmonic vibrational frequencies were carried ...
Espectroscopia vibracional em cristais de d-alanina e dl-alanina sob condições ...
Belo, Ezequiel de AndradeIn this work the vibrational behavior of single crystals of D-alanine (DALA) and DLalanine (DLA) under extreme conditions of temperature and pressure have been studied. By doing so, have been used infrared and Raman spectroscopy. The infrared spectra for DALA crystal were measured between 400 cm-1 to 3200 cm-1 from room temperature up to 100 K and the results obtained are similar to those reported in literature...