Qualitative analysis of vibration-rotation hamiltonians for spherical top molecules

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Abstract
A new approach to the qualitative analysis of the rotational structure of a group of degenerate or quasidegenerate vibrational states is proposed. The approach is based on a quantum description of resonant vibrational states and on using classical methods when describing the rotational structure of these states. The approach is used for studying the rotational structure of two- and three-fold degenerate vibrational states of the tetrahedral AB 4 molecule as well as for studying the v 1, v 3 diad of 28SiH4. The general scheme of the analysis is realized by computer.