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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 do ácido trans-cinâmico complexado com e...
Pereira, Jose Enedilton MedeirosThis work is focused on characterization of a polycrystalline sample of the coordination compound with ions Eu3+ using as a binder the trans-cinnamic acid , [Eu(cin)3]. The interest in coordination with lanthanide compounds is due to their large technological applications. The process of luminescence of coordination compounds containing lanthanide, also called antenna effect, has a main objective the use of new ...