Abstract
Raman and infrared spectra (20–5000 cm −1) of (CH 3) 2NH 2ClO 4 and its N-deuterated analogue were investigated in the temperature range 90–350 K. A temperature dependent study of widths and frequencies of prominent bands confirms (a) the existence of phase transitions at 309 and 311 K and (b) in the high temperature phases II and I, the cations and anions undergo reorientational motions.
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