Determination of αe and ωeye from potential energy functions for diatomic molecules

For comparing three-parameter potential energy functions near the potential minimum, re, ke and ωexe have been used to determine the potential parameters and thence to calculate αe and ωeye of homonuclear diatomic molecules. Detailed results are presented for αe and ωeye for the Morse, Rydberg and Varshni potentials. Possible errors in certain spectroscopic constants of some molecules are pointed out.