title: N,N'-Bis[(E)-4-cyano-benzyl-idene]urea.
abstract: The mol-ecule of the title compound, C(17)H(10)N(4)O, has crystallographically imposed C(2) symmetry. The urea group and the benzene ring are nearly coplanar, the dihedral angle between them being 4.15 (7)°. The crystal packing is stabilized by aromatic π-π stacking inter-actions, with a centroid-to-centroid separation of 3.833 (4) Å.
authors.affiliation: Ordered Matter Science Research Center, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, People's Republic of China.
authors.forename: De-Hong
authors.initials: DH
authors.lastname: Wu
authors.forename: Ling
authors.initials: L
authors.lastname: Hu