3-Ethyl-4-[(E)-(4-fluoro­benzyl­idene)amino]-1H-1,2,4-triazole-5(4H)-thione

In the title compound, C11H11FN4S, the dihedral angle between the 1,2,4-triazole ring and the benzene ring is 25.04 (12)° and an intra­moleuclar C—H⋯S inter­action leads to an S(6) ring. In the crystal, inversion dimers linked by pairs of N—H⋯S hydrogen bonds generate R 2 2(8) loops

4-[(E)-(4-Fluoro­benzyl­­idene)amino]-3-methyl-1H-1,2,4-triazole-5(4H)-thione

In the asymmetric unit of the title compound, C10H9FN4S, there are two independent mol­ecules in which the dihedral angles between the 1,2,4-triazole and benzene rings are 36.85 (10) and 7.81 (10)°. In the crystal, N—H⋯S inter­actions link pairs of independent mol­ecules into dimers. There are also π–π inter­actions between the triazole and benzene rings of inversion-related pairs of the more planar mol­ecule [centroid–centroid distance = 3.6430 (13) Å]