7-(4-Chlorobenzylidene)-3-[(4-chlorophenoxy)methyl]-6-(4-nitrothiophen-2-yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazine

In the title compound, C22H13Cl2N5O3S2, the thiadiazine ring adopts a half-chair conformation. The benzene rings of the chlorophenoxy and chlorobenzyl groups and the thiophene ring form dihedral angles of 35.6 (1), 80.7 (1) and 14.2 (1)°, respectively, with the triazole ring. In the crystal, molecules are connected into sheets parallel to (11) by intermolecular C—H⋯N and C—H⋯Cl hydrogen bonds. In addition, π–π stacking interactions are observed between thiophene and triazole rings, and between inversion-related triazole rings [centroid–centroid distances = 3.5975 (11) and 3.4324 (11) Å].