Calculation of spectroscopic constants of diatomic molecules with the help of the potential functions of the perturbed Morse oscillator

The spectroscopic molecular constants were calculated for the ground electronic states of copper, silver, and gold dimers. The calculation was performed based on the potential functions of the perturbed Morse oscillator whose parameters were determined in this work. The calculated values of the vibrational energy, the rotational constant, and the centrifugal-distortion constant were compared with the experimental data.