In the structure of the title compound, C26H18Cl3N3O2S·CH2Cl2, the C - S bond lengths in the thio-phene ring [1.733 (5) and 1.735 (5) Å] are equivalent and long compared with the values observed in both free thio-phene, measured using electron diffraction, and thieno[2,3-c]pyridine. The central thienopyridine ring system is planar. The pyrimidinone ring forms a dihedral angle of 3.1 (2)° with the pyridine ring. The chloro- and dichloro-phenyl rings form dihedral angles of 75.2 (2) and 85.5 (2)°, respectively, with the pyrimidinone ring. The...
