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

In the present paper, thermal properties of K-2 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 K-2 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 K-2 molecule. We can use the model to predict thermal properties at the temperature ranges where there are no experimental results.