Molecular docking results also revealed that as bulky groups were attached to base structure of lig-2 as compared to lig-1 and when docked to DNA, there were less number of hydrogen bonding interactions with lig-1 and DNA than that with lig-2; owing to more steric hindrances and consequently the fact that number of hydrogen bonding interactions decrease on attaching bulky groups complement the obtained results. These hydrogen bonding interactions were obtained from Discovery Studio Visualizer and are discussed below in detail.