Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/344737
Type: Artigo
Title: Low-temperature Raman spectra of the 2-(alpha-methylbenzylamino)-5-nitropyridine crystal
Author: Pinheiro, G. S.
Ferreira Júnior, M. N. G.
Santos, A. O. dos
Freire, P. T. C.
Lima Jr., J. A.
Nogueira, C. E. S.
Cardoso, L. P.
Sherwood, J. N.
Remédios, C. M. R.
Abstract: The polar organic 2-(alpha-methylbenzylamino)-5-nitropyridine crystal (MBANP) has been studied by Raman spectroscopy at low temperatures (from 300 to 10 K). The effect of temperature change on the vibrational spectrum is discussed with the aid of DFT calculations. The behavior of the Raman spectra indicates that MBANP molecules present a different conformation at low temperatures associated with the rotation of the phenyl and pyridine rings. Temperature -dependent X-ray measurements and differential scanning calorimetry (DSC) analysis were utilized as complementary techniques to investigate the structural stability of MBANP crystal.
Subject: Espectroscopia Raman
Baixas temperaturas
Transição de fase
Raman spectroscopy
Low temperatures
Phase transition
Country: Holanda
Editor: Elsevier
Rights: fechado
Identifier DOI: 10.1016/j.saa.2017.04.055
Address: https://www.sciencedirect.com/science/article/pii/S1386142517303268
Date Issue: 2017
Appears in Collections:IFGW - Artigos e Outros Documentos

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