**Figure 6.**

*Stabilization of the carbene by adjacent ring nitrogens.*

perpendicular to it in the lowest unoccupied molecular orbital (**Figure 6**). As reported by Goddard et al. [42] singlet carbenes do not undergo dimerization easily, and adjacent nitrogen in NHCs further decreases the energy of HOMO, which causes sizeable singlet-triplet energy gaps. Interrelation among the lone pair of electrons of nitrogen present in p-orbital with empty LUMO (Mesomeric donation) also contributes to stabilizing the structure of the singlet ground-state.
