Abstract
In the title compound, C15H14N2OS, the pyridinone ring in the fused-ring system is nearly planar (r.m.s. deviation = 0.011 angstrom) and the cyclohexene ring has a twisted half-boat conformation with the methylene C atom adjacent to the methine C atom deviating by 0.592 (7) angstrom from the plane defined by the remaining five atoms (r.m.s. deviation = 0.108 angstrom ). The thienyl ring is disordered over two almost coplanar positions of opposite orientation in a 0.649 (4):0.351 (4) ratio, and forms dihedral angles of 51.4 (3) (major component) and 54.2 (3)degrees, respectively, with the pyridinone ring. In the crystal, inversion-related molecules associate via an eight-membered {center dot center dot center dot HNCO}(2) synthon and these are linked into a linear supramolecular chain along the a axis by weak pi-pi interactions that occur between centrosymmetrically related pyridinone rings [centroid-centroid distance = 3.889 (2) angstrom].