3-Ethyl-6-[3-(4-fluoro-phen-yl)-1H-pyrazol-4-yl]-1,2,4-triazolo[3,4-b][1,3, 4]thia-diazole

Abstract

In the title compound, C14H11FN6S, the 1,2,4-triazolo[3,4-b][1,3,4]thia-diazole ring system is essentially planar [maximum deviation = 0.022 (3) ] and is inclined at dihedral angles of 15.00 (18) and 52.82 (16) with respect to the pyrazole and phenyl rings. In the crystal, mol-ecules are linked into two-dimensional networks parallel to (100) via inter-molecular N - H?N and weak C - H?N hydrogen bonds. The crystal packing is further consolidated by weak ?-? stacking inter-actions, with a centroid-centroid distance of 3.590 (2) . The crystal studied was an inversion twin with a 0.37 (13):0.63 (13) domain ratio.