Electronic Resource
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
89 (1988), S. 1634-1641
ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
(CH3)3 NHNO3 belongs to the monoclinic system with space group P21/c (C52h ) with four molecules per unit cell. Raman and infrared spectra (10–5000 cm−1) of single crystals and polycrystalline samples of (CH3)3 NHNO3 and of its N-deuterated derivative were investigated in the temperature range 90–415 K. Assignments of the measured frequencies to the internal vibrational modes were obtained. A systematic temperature dependent study of frequencies, bandwidths and integrated intensities was performed. The results indicate the existence of phase transitions at 359 and 407 K and both phase transitions show thermal hysteresis, characteristic of first order. In the high temperature phases II and I, the cations and anions achieve reorientational motion.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.455160
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