Crystal structure of (Z)-3-allyl-5-(4-chloro-benzyl-idene)-2-sulfanyl-idene-1,3-thia-zolidin-4-one.

In the title compound, C13H10ClNOS2, the dihedral angle between the rhodanine (r.m.s. deviation = 0.008†à ) and 4-chloro-benzyl-idene rings is 1.79†(11)°. The allyl group attached to the N atom, which lies almost perpendicular to the rhodanine ring, is disordered over two orientations in a 0.519†(13):0.481†(13) ratio. A short intra-molecular C-H⋯S inter-action closes an S(6) ring. In the crystal, mol-ecules are linked by π-π stacking inter-actions [centroid-centroid separation = 3.600†(15)†à ], generating inversion dimers.