Abstract
In the title compound, C20H21N5O, the conformation about the imine bond [1.289 (3) angstrom] is E. Overall, the molecule is disk-shaped with the imidazole ring located above the remainder of the molecule and with the dihedral angles of 10.97 (15) and 12.11 (15)degrees, respectively, between the imidazole ring and the phenyl and methylbenzene rings; the dihedral angle between the aromatic rings is 8.17 (14)degrees. Within the urea unit, the N-H atoms are anti to each other and one of the N-H atoms forms an intramolecular N-H center dot center dot center dot N hydrogen bond. Helical supramolecular chains along [001] are formed via N-H center dot center dot center dot N imidazole) hydrogen bonds in the crystal structure. These are connected into a three-dimensional architecture by C-H center dot center dot center dot O(carbonyl) and C-H center dot center dot center dot pi interactions.