Crystal structure of N-(4-oxo-2-sulfanyl­idene-1,3-thia­zolidin-3-yl)-2-(thio­phen-3-yl)acetamide

The title compound, C(9)H(8)N(2)O(2)S(3), crystallizes with two mol­ecules (A and B) in the asymmetric unit. Both have similar conformations (overlay r.m.s. deviation = 0.209 Å) and are linked by an N—H⋯O hydrogen bond. In both mol­ecules, the thio­phene rings show orientational disorder, with occupancy factors of 0.6727 (17) and 0.3273 (17) for mol­ecule A, and 0.7916 (19) and 0.2084 (19) for mol­ecule B. The five-membered rings make an angle of 79.7 (2)° in mol­ecule A and an angle of 66.8 (2)° in mol­ecule B. In the crystal, chains of mol­ecules running along the a-axis direction are linked by N—H⋯O hydrogen bonds. The inter­action of adjacent chains through N—H⋯O hydrogen bonds leads to two types of ring structures containing four mol­ecules and described by the graph-set motifs R (4) (4)(18) and R (4) (2)(14).