%0 Journal Article %1 WOS:000280621500014 %A Jr., J A Lima %A Freire, P T C %A Melo, F E A %A Filho, J Mendes %A Sousa, G P De %A Lima, R J C %A Filho, P F Facanha %A Bordallo, H N %C 111 RIVER ST, HOBOKEN 07030-5774, NJ USA %D 2010 %I WILEY %J JOURNAL OF RAMAN SPECTROSCOPY %K acid; bond; hydrogen low temperature} {amino %N 7 %P 808-813 %R 10.1002/jrs.2507 %T Low-temperature Raman spectra of racemate DL-Alanine crystals %V 41 %X Raman spectra of DL-Alanine crystals were investigated in the 50-3200 cm(-1) spectral region for temperatures ranging from 15 to 295K. The crystalline structure of DL-Alanine represents a rare example of an amino acid racemate crystallizing in a non-centrosymmetric space group. From this study, we have observed changes in the wavenumber of modes associated with both rocking of CO2- and skeletal vibrations. On the other hand, neither changes in the modes associated to CH or CH3 vibrations nor substantial modifications of the lattice modes of the crystal were observed. Such result indicates slight changes of the CO2 group orientation without observation of a solid-solid phase transition in the DL-Alanine crystal. Copyright 2009 John Wiley & Sons, Ltd.

@article{WOS:000280621500014, abstract = {Raman spectra of DL-Alanine crystals were investigated in the 50-3200 cm(-1) spectral region for temperatures ranging from 15 to 295K. The crystalline structure of DL-Alanine represents a rare example of an amino acid racemate crystallizing in a non-centrosymmetric space group. From this study, we have observed changes in the wavenumber of modes associated with both rocking of CO2- and skeletal vibrations. On the other hand, neither changes in the modes associated to CH or CH3 vibrations nor substantial modifications of the lattice modes of the crystal were observed. Such result indicates slight changes of the CO2 group orientation without observation of a solid-solid phase transition in the DL-Alanine crystal. Copyright 2009 John Wiley & Sons, Ltd.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {111 RIVER ST, HOBOKEN 07030-5774, NJ USA}, author = {Jr., J A Lima and Freire, P T C and Melo, F E A and Filho, J Mendes and Sousa, G P De and Lima, R J C and Filho, P F Facanha and Bordallo, H N}, biburl = {https://www.bibsonomy.org/bibtex/2887da20f92e6bb7ecf862c2ba5994419/ppgfis_ufc_br}, doi = {10.1002/jrs.2507}, interhash = {aef48b4c4bb3b67969d12f38f9762de2}, intrahash = {887da20f92e6bb7ecf862c2ba5994419}, issn = {0377-0486}, journal = {JOURNAL OF RAMAN SPECTROSCOPY}, keywords = {acid; bond; hydrogen low temperature} {amino}, number = 7, pages = {808-813}, publisher = {WILEY}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Low-temperature Raman spectra of racemate DL-Alanine crystals}, tppubtype = {article}, volume = 41, year = 2010 }