https://doi.org/10.1140/epjp/s13360-025-06787-y
Comment
Comment on “Thermodynamic evaluation of Coshine Yukawa potential (CYP) for some diatomic molecule systems”
INIFTA, DQT, Sucursal 4, C.C 16, 1900, La Plata, Argentina
a
fernande@quimica.unlp.edu.ar
Received:
8
April
2025
Accepted:
20
August
2025
Published online:
2
September
2025
We show that the potential proposed by the authors is unsuitable for the study of diatomic molecules. The so-called Coshine Yukawa potential (CYP) does not exhibit a minimum and, consequently, one cannot define the equilibrium bond length and dissociation energy that are necessary for the physical applications proposed by the authors. The CYP resembles a screened Coulomb potential and is more suitable for the analysis of one-electron atomic spectra. We also show that the authors failed to calculate the ro-vibrational partition function properly because they omitted the sum over the rotational quantum number.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
