2-(4-Fluoro-phen-yl)-3-[5-(4-nitro-phen-yl)-1,3,4-thia-diazol-2-yl]-1,3-thia-zolidin-4-one.

In the title compound, C(17)H(11)FN(4)O(3)S(2), the five-membered thia-zolidinone and thia-diazole rings are almost planar, with r.m.s. deviations of 0.017 and 0.0019†à , respectively. The 4-fluoro-phenyl ring is almost perpendicular to the thia-diazole ring, making a dihedral angle of 89.5†(3)°. The 4-nitro-phenyl ring is nearly coplanar with the thia-diazole ring, the dihedral angle being 7.9†(3)°. The crystal structure is stabilized by two inter-molecular C-H⋯O hydrogen bonds.