title: 1,3-Bis(2-quinolylcarbon-yl)-1H,3H-2,1,3-benzothia-diazole 2-oxide.
abstract: In the title compound, C(26)H(16)N(4)O(3)S, the thia-diazole ring adopts an envelope conformation, with the S atom occupying the flap position. The dihedral angle between the two quinoline ring systems is 55.32 (8)°. In the crystal, the mol-ecules are linked into chains along [010] by C-H⋯O hydrogen bonds. The chains are connected via π-π inter-actions involving one of the pyridine rings [centroid-centroid distance = 3.5558 (18) Å].
authors.affiliation: School of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, People's Republic of China.
authors.forename: Lin-Hai
authors.initials: LH
authors.lastname: Jing