Vibrational analysis of monomeric trihalides of scandium subgroup

The kinetic constant postulate is applied to evaluate a fresh set of potential constants in the case of monomeric trihalides of scandium subgroup, using recent vibrational frequencies (Krasnov, 1967). The calculated kinetic and potential constants are used to evaluate other molecular constants namely compliance constants, mean amplitudes of vibration, Coriolis coupling constants, shrinkage constants and centrifugal distortion constants. The calculated mean amplitudes of vibration are compared with the experimental values (Akishin et al 1959a, 1959b). The compliance constants, Coriolis coupling constants and the centrifugal distortion constants for these molecules are reported here for the first time. (auth.)