JOURNAL OF PHYSICAL CHEMISTRY A, vol.103, no.30, pp.5900-5904, 1999 (SCI-Expanded)
We have performed in this study the calculation of the Raman frequencies for two translational modes and one librational mode in the ammonia solid I near the melting point. We have obtained the Raman frequencies as a function of temperature for some fixed pressure by means of the Gruneisen relation using the volume data from the literature. Our calculated Raman frequencies can be compared with experimental data available in the literature.