title: 1,1'-[Imidazolidine-1,3-diylbis(methyl-ene)]bis-(1H-benzotriazole).
abstract: In the title compound, C(17)H(18)N(8), the imidazolidine ring adopts an envelope conformation with the substituents at the N atoms in trans positions with respect to the central ring. The dihedral angle between the two benzotriazole rings is 71.65 (10)°. In the crystal, non-classical C-H⋯N inter-actions link the mol-ecules into helical chains along the b axis. The crystal packing is further stabilized by weak C-H⋯π inter-actions.
authors.forename: Augusto
authors.initials: A
authors.lastname: Rivera
authors.forename: Diego
authors.initials: D
authors.lastname: Quiroga
authors.forename: Jaime
authors.initials: J
authors.lastname: Ríos-Motta
authors.forename: Karla
authors.initials: K
authors.lastname: Fejfarová
authors.forename: Michal
authors.initials: M
authors.lastname: Dušek