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In the title compound, C13H11N3S2, the phenyl ring is twisted from the 1,2,4-triazole plane by 63.35 (9)° and by 47.35 (9)° from the thiophene plane. In the crystal, chains of molecules running along the c-axis direction are formed by N—H...S interactions [graph-set motif C(4)]. The 1,2,4-triazole and phenyl rings are involved in π–π stacking interactions [centroid–centroid distance = 3.4553 (10) Å]. The thiophene ring is involved in C—H...S and C—H...π interactions. The intermolecular interactions in the crystal packing were further analysed using Hirshfield surface analysis, which indicates that the most significant contacts are H...H (35.8%), followed by S...H/H...S (26.7%) and C...H/H...C (18.2%).

The synthesis and crystal structure of a new thio­phene monomer containing a 1,2,4-triazole-5-thione ring are reported. The thio­phene and 1,2,4-triazole rings are inclined to each other by 79.70 (9)°., In the title compound, C13H11N3S2, the phenyl ring is twisted from the 1,2,4-triazole plane by 63.35 (9)° and by 47.35 (9)° from the thio­phene plane. In the crystal, chains of mol­ecules running along the c-axis direction are formed by N—H⋯S inter­actions [graph-set motif C(4)]. The 1,2,4-triazole and phenyl rings are involved in π–π stacking inter­actions [centroid–centroid distance = 3.4553 (10) Å]. The thio­phene ring is involved in C—H⋯S and C—H⋯π inter­actions. The inter­molecular inter­actions in the crystal packing were further analysed using Hirshfield surface analysis, which indicates that the most significant contacts are H⋯H (35.8%), followed by S⋯H/H⋯S (26.7%) and C⋯H/H⋯C (18.2%).