Spectroscopic properties and vibrational levels for X2Σ+ and A2Πstates of CS+ molecule: A multi-reference configuration interaction study

► The PECs and APEFs of the X2Σ+ and A2Π states of CS+ molecule are obtained. ► The spectroscopic parameters De, Re, Be, ωe, ωexe, ωeye, αe, γe, βe, Drot, Fe, He are determined. ► The vibrational energy levels for all the considered states are obtained.