The TD-DFT protocol has the advantage of being more flexible than the DFT-ROCIS protocol in terms of choice of functional approximations, since DFT-ROCIS is parameterized for B3LYP and BHANDHLYP only, where as TD-DFT can be used with any functional. For direct evaluation against DFT-ROCIS, we performed TD-DFT calculations using both the B3LYP functional and the CAM-B3LYP functional in the present study, keeping in mind that CAM-B3LYP is a range-separated functional which can accurately account for valence-excited states and can more accurately reproduce excited state potential energy surfaces, which will later be used to take into account dissociative dynamics. The RIJCOSX approximation was used for all TD-DFT calculations , along with Tamm-Dancoff approximation .