4-[1-(4-Cyano­benz­yl)-1H-benzimidazol-2-yl]benzonitrile

In the title compound, C(22)H(14)N(4), a new substituted benzimidazole, three inter­molecular C—H⋯N inter­actions link neighbouring mol­ecules into different dimers with R (2) (2)(12), R (2) (2)(8) and R (2) (2)(24) ring motifs. A fourth C—H⋯N inter­action links neighbouring mol­ecules along the c axis. There is also a short inter­molecular contact between the azomethine (C=N) segment of the benzimidazole ring and one of the C atoms of a neighbouring benzene ring [N⋯C = 3.191 (5), C⋯C = 3.364 (6) Å], which links the mol­ecules along the a axis. The two cyano­benzene rings are almost perpendicular to each other, with an inter­planar angle of 87.70 (7)°. The dihedral angles between the mean planes of the benzimidazole ring and the two outer benzene rings are 36.27 (16) and 86.70 (16)°. In the crystal structure, mol­ecules are stacked down the a axis with centroid–centroid distances of 3.906 (2)–3.912 (2) Å and inter­planar distances of 3.5040 (17) and 3.6235 (17) Å.