The calculations are based on density functional theory (DFT) and related time-dependent DFT (TD-DFT) employing the Gaussian 16 package. For all calculations a range-separated functional is used similar to our previous work, namely ωb97xd, where ω is kept at its default value. We note that this functional incorporates a dispersion corrections, i.e., van-der-Waals interaction. The Pople-type 6-31G(d,p) basis set is used throughout the calculations.