Vibrational spectra of polyatomic molecules depend on the atomic masses. Using the CS2 molecule as an example, a statistical analysis is performed for the stretching vibrational energy levels as a function of the isotopic masses. It is found that both the nearest-neighbour level spacing distribution and Δ3 statistics are modified by isotopic substitution which should have experimental consequences.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry