Homogeneous interaction of ion-pair states of ClF

The energies, rotational constants, and isotope shifts of vibrational levels of the homogeneously perturbed ion-pair states E, f, β, and Gof the ClF molecule are calculated by the methods of diabatic and adiabatic potentials. The spectroscopic constants of initial diabatic potentials and the parameters of interaction for which the best agreement between theory and experiment is achieved are presented.