An experimental and theoretical vibrational study of 3,3,6,6-tetramethyl-1,2,4,5-tetrathiane

3,3,6,6-tetrametyl-1,2,4,5-tetrathiane, [(CH3)2CS2]2, was prepared and the corresponding infrared and Raman spectra were measured. The observed bands were assigned to the different normal modes of vibration after a DFT calculation of the molecular vibrational properties. The experimental vibrational data and the corresponding assignments were subsequently used as a basis for the definition of a scaled quantum mechanics (SQM) force field for the studied molecule. A comparison of force constants and geometrical parameters was made with related molecules.