Vibrational spectroscopy and the intermolecular dynamics of condensed states VI. Temperature dependence of the intermolecular spectra for toluene,quinoline, and PCl3

The spectra have been examined for the polycrystalline and liquid states; the temperature ranges for orientation melting have been measured, as has the temperature range for the polymorphic transition in toluene. It is found that orientation ordering occurs in liquid quinoline near the usual melting point, and a short-range order structure is assumed. The behavior of toluene shows marked thermal hysteresis in the range from –50 to –150 ° C.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 69–72, February, 1972.