On the grounds of its well-known robustness and widespread use , geometry optimizations and zero-point corrected electronic energies of reactants, transition states, intermediates, and products along the reaction pathways were obtained by the M06-2X global hybrid density functional in conjunction with the 6-311++G(d,p) basis set. The stationary points on the reaction pathways were characterized as minima (reactants, intermediates, and products) and saddle points (transition states) based on vibrational frequency calculations. The transition obtained were further confirmed using intrinsic reaction coordinate (IRC) scans at the same levels of theory.