The title compound, C52H40N2, is disposed about a centre of inversion and the conformation about the imine bond [1.268 (3) Å] is E. The terminal benzene ring is approximately perpendicular to the central 1,4-di-aza-butadiene mean plane, forming a dihedral angle of 81.2 (3)°. Weak C-H⋯π and π-π [inter-centroid distance = 4.021 (5) Å] inter-actions help to consolidate the packing.
Keywords: 1,4-diazabutadiene; Ci symmetry; crystal structure.
© Zhang et al. 2020.