3-(4-Chloro­phen­yl)-6-(2,4-difluoro­phen­yl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thia­diazine

The title compound, C₁₆H₉ClF₂N₄S, was prepared by the reaction of 4-amino-5-mercapto-3-chloro­phenyl-1,2,4-triazole and 2-bromo-2',4'-fluoro­acetophenone. The six-membered thia­diazine ring is distorted from planarity, with an r.m.s. deviation of 0.201 Å. All C and N atoms of the triazole ring are conjugated.