Calculation of the Raman frequency as a function of pressure for the phases of I, III, IV and V in cyclohexane

摘要

The Raman frequencies of the v_5 mode are calculated as a function of pressure up to 10 GPa (room temperature) for the phases I, III, IV and V of cyclohexane using the volume data from the literature by means of the isothermal mode Grüneisen parameter γ_r of this mode. Our results indicate that the Raman frequency can be calculated from the volume data at various pressures by a single mode Grüneisen parameter as we have studied here for the phases of I, III, IV and V of cyclohexane. This method of calculating the Raman frequencies can be applied to some other molecular crystals.