1-(5-Bromo-4-phenyl-1,3-thiazol-2-yl)pyrrolidin-2-one

Abstract

The asymmetric unit of the title compound, C13H 11BrN2OS, consists of two crystallographically independent molecules (A and B). In each molecule, the pyrrolidine ring adopts an envelope conformation with a methylene C atom as the flap atom. In molecule A, the central thiazole ring makes a dihedral angle of 36.69 (11)°with the adjacent phenyl ring, whereas the corresponding angle is 36.85 (12)°in molecule B. The pyrrolidine ring is slightly twisted from the thiazole ring, with C - N - C - N torsion angles of 4.8 (3) and 3.0 (4)°in molecules A and B, respectively. In the crystal, C - H⋯π and π-π [centroid-to-centroid distance = 3.7539 (14) Å] interactions are observed. The crystal studied was a pseudo-merohedral twin with twin law (1̄00 01̄0 101) and a refined component ratio of 0.7188 (5):0.2812 (5).