Theoretical Prediction of Thermal Properties of K2 Diatomic Molecule Using Generalized Mobius Square Potential

In the present paper, thermal properties of K2 diatomic molecule were theoretically investigated. To this goal, we have used the generalized Mobius square (GMS) potential and obtained the rotational–vibrational energy levels of the GMS potential analytically. The Schrodinger equation (SE) was solved by considering a Pekeris-type approximation framework and a suitable coordinate transformation. Using the calculated energy levels, we can analytically obtain the partition function and thereby thermal properties of the K2 molecule such as mean energy, entropy, enthalpy and etc. Comparison of our results with experimental data shows a good agreement. Our results reveal that the GMS potential is a suitable candidate to predict the thermal properties of the K2 molecule. We can use the model to predict thermal properties at the temperature ranges where there are no experimental results.