Crystal structure and Hirshfeld surface analysis of 2-amino-6-[(1-phenyl­eth­yl)amino]-4-(thio­phen-2-yl)pyridine-3,5-dicarbo­nitrile

In the title compound, C(19)H(15)N(5)S, the thio­phene ring is disordered in a 0.6:0.4 ratio by an approximate 180° rotation of the ring around the C—C bond linking it to the pyridine ring. In the crystal, the mol­ecules are linked by N—H⋯N hydrogen bonds into dimers with an R (2) (2)(12) motif, forming chains along the b-axis direction. These chains are connected to each other by further N—H⋯N hydrogen bonds, forming a three-dimensional network. Furthermore, N—H⋯π and π–π [centroid–centroid separations = 3.899 (8) and 3.7938 (12) Å] inter­actions also contribute to the crystal cohesion. A Hirshfeld surface analysis indicated that the most important contributions to the surface contacts are from H⋯H (46.1%), N⋯H/H⋯N (20.4%) and C⋯H/H⋯C (17.4%) inter­actions.