Abstract
In the title compound, C20H19N3OS, the central benzene ring makes dihedral angles of 45.36 (9) and 55.33 (9)degrees ith the thiophene ring and the dimethyl-substituted benzene ring, respectively. The dihedral angle between the thiophene ring and dimethyl-substituted benzene ring is 83.60 (9)degrees. The thiophene ring and the benzene ring are twisted from the mean plane of the C(= O)-N-N = C bridge [maximum deviation = 0.0860 (13) angstrom], with dihedral angles of 23.86 (9) and 24.77 (8)degrees, respectively. An intramolecular N-H center dot center dot center dot O hydrogen bond generates an S(6) ring. In the crystal, molecules are linked by N-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds to the same acceptor atom, forming sheets lying parallel to the bc plane. The crystal packing also features C-H center dot center dot center dot pi interactions.