Redetermination of the crystal structure of 2-oxo-1,3-thia­zolidin-4-iminium chloride

In the redetermination of the title compound, C(3)H(5)N(2)OS(+)·CI(−), the asymmetric unit consists of one independent 2-oxo-1,3-thia­zolidin-4-iminium cation and one independent chloride anion. The cation inter­acts with a chloride anion via N—H⋯Cl hydrogen bonds forming a supra­molecular chain along [010]. These supra­molecular chains are further extended by weak C—H⋯Cl and C—H⋯O inter­actions, forming a two-dimensional network parallel to (001). The crystal structure is further stabilized by weak C—O⋯π inter­actions, supporting a three-dimensional architecture. The structure was previously determined by Ananthamurthy & Murthy [Z. Kristallogr. (1975). 8, 356–367] but has been redetermined with higher precision to allow the hydrogen-bonding patterns and supra­molecular inter­actions to be investigated.