Molecular Vibrations of Aluminum Trichloride Monomer with Application of the Keating Bendings

Abstract

The vibrational spectra and previous normal coordinate analyses of AICI3 are reviewed. The valence force field (VFF), central force field (CFF) and Keating force field (KFF) are tested. KFF is found to be the best one of these approximations with regard to the agreement with an observed isotopic frequency. A final force field is taken from a very recent work. It confirms that KFF is superior to both CFF and KFF. The data of a Coriolis constant, mean amplitudes of vibration and the Bastiansen-Morino shrinkage effect are calculated and discussed.