In the title compound, C12H10N2S2, which was synthesized by the reaction of 2,2′-thenil and ethylenediamine, the dihedral angle between the two thiophene rings is 66.33 (9)°. In the crystal structure, intermolecular C—H⋯N hydrogen bonds link the molecules into infinite chains along the b axis and weak C—H⋯π interactions may further stabilize the structure
