Abstract

The adiabatic multi-step separation method is used to calculate vibrational energy levels of SO 2. This method reduces the multidimensional vibrational problem to one-dimensional problems by performing successive adiabatic separations of the different vibrational modes. Results are obtained and compared with those from other approximate methods and variationally converged eigenvalues. The adiabatic energies are found to be the most accurate ones, showing very good agreement with the exactum quantum values.

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