Computation of Asymmetric Rotator Constants from Energy Moments. III. First‐Order Centrifugal Stretching Effects

Abstract
Further expressions are developed which relate the parameters of the asymmetric rotator to experimental data through moments of the energy levels. The expressions developed here apply to an asymmetric rotator system described by a Hamiltonian which includes terms allowing for first‐order centrifugal stretching effects. A criterion for the applicability of the first‐order theory is given.