I am using Morse potential to calculate the spectroscopic constants of a diatomic molecule. So far I was able to calculate $R_e$, $\omega_e$, $\omega_ex_e$, $B_e$ but wasn't able to calculate $\omega_ey_e$ and $\omega_ez_e$. Does anyone have any idea how to calculate these two constants. I was searching in several textbooks for equations that I can use to calculate them using the Morse potential but I wasn't successful! Any help is really appreciated.

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    $\begingroup$ The solution to the Morse potential only gives these constants, so does not actually describe a real potential in any more detail. Empirical series expansion of the energy terms gives ye, ze etc. You might want to look for the RKR method to define the potential. $\endgroup$
    – porphyrin
    Aug 27 at 7:29
  • $\begingroup$ Thank you so much @porphyrin $\endgroup$
    – Naps
    Aug 28 at 15:20

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