3-(2,4-Di­chloro­phenyl)-4-[(1E)-(2,4-di­chloro­phenyl)­methyl­ene­amino]-4,5-di­hydro-1H-1,2,4-triazole-5-thione di­methyl­form­amide solvate

The title triazole compound, C₁₅H₈Cl₄N₄S·C₃H₇NO, has been obtained as an unexpected product when attempting to prepare Schiff bases of thio­carbohydrazide (TCH). The triazole ring is planar within 0.004 (8) Å because of conjugation. The dihedral angles between the 1,2,4-triazole ring and the two benzene rings are 24.9 (2) and 70.0 (2)°. The interplanar angle between the two benzene rings is 83.4 (2)°. The packing of the mol­ecules is stabilized both by van der Waals interactions and by N—H...O intermolecular hydrogen bonds between the triazole N atom and the carbonyl O atom of the di­methyl­form­amide solvent mol­ecule.