Crystal structure of (E)-1,3-dimethyl-2-[3-(3-nitro­phen­yl)triaz-2-en-1-yl­idene]-2,3-di­hydro-1H-imidazole

The title mol­ecule, a rare example of a π-conjugated triazene, crystallized with two independent mol­ecules in the asymmetric unit. In the crystal, the two independent mol­ecules stack head-to-tail probably due to the presence of the dipole moment of the meta nitro group.