Calculation of the Raman frequency shifts for the α phase of solid oxygen

The Raman frequency shifts calculated for the pressure-induced librons and vibron, agree with the experimental frequency shifts in most cases, in particular at low pressures for α−O2. This shows that the Raman frequency shifts can be calculated adequately from the volume by means of the mode Grüneisen parameter using the method given here for the α-phase of oxygen or more generally for molecular solids.