Centrifugal-Distortion Coefficients of the Nonlinear XYX Molecule

Abstract
All coefficients of centrifugal distortion that are expected to contribute to the molecular vibration—rotation energies to fourth or lower orders of approximation are calculated for the nonlinear XYX molecule as functions of the fundamental molecular constants. The Nielsen—Amat—Goldsmith expansion of the vibration—rotation Hamiltonian forms the basis of this calculation.