The method of Kivelson and Wilson for calculating centrifugal distortion constants (tαβγδ) is treated in terms of matrix notation. A modified method is developed, by which the quantities of tαβγδ are obtained with the aid of certain elements Tαβs (t), rather than the partial derivatives of inertia tensor components, Jαβs (t), used in the method of Kivelson and Wilson. The Tαβs (t) elements may easily be evaluated for a given molecular model from the equilibrium position vectors and the Wilson s vectors. The bent symmetrical X Y2 molecule model is used for exemplification of the developed theory. Also included are some numerical results for a number of molecules of the bent symmetrical X Y2 type.
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Cyvín et al. (1968) studied this question.