The Improved Deformed Exponential-type Potential Energy Model for N2, NI, ScI, and RbH Diatomic Molecules

The dissociation energy and the equilibrium bond length have been employed as explicit parameters to obtain an improved version of the deformed exponential-type potential (IDEP). The potential parameters have been defined in terms of the molecular parameters. The IDEP has been used to model an inter-nuclear interaction potential curves for different electronic states of dinitrogen, nitrogen monoiodide, scandium monoiodide, and rubidium hydride molecules. Also, we have obtained the average absolute deviations of the IDEP from the experimental Rydberg-Klein-Rees (RKR) data points of the dissociation energy for the selected diatomic molecules. This study has shown to be highly relevant to the study of thermodynamic and thermochemical functions of diatomic molecules since the IDEP is considered efficient for the description of potential energy interaction.