Crystal structure of N,N′-di­benzyl­pyromellitic diimide

The title compound, C(24)H(16)N(2)O(4) [systematic name: 2,6-di­benzyl­pyrrolo­[3,4-f]iso­indole-1,3,5,7(2H,6H)-tetra­one], consists of a central pyromellitic di­imide moiety with terminal benzyl groups at the N-atom positions. The mol­ecule is located about an inversion centre, so the asymmetric unit contains one half-mol­ecule. In the mol­ecule, both terminal phenyl groups, tilted by 72.97 (4)° with respect to the mean plane of the central pyromellitic di­imide moiety (r.m.s. deviation = 0.0145 Å), are oriented away from each other, forming an elongated S-shaped conformation. In the crystal, mol­ecules are connected via weak C—H⋯O hydrogen bonds and C—H⋯π inter­actions, resulting in the formation of supra­molecular layers extending parallel to the ab plane.