title: 2-[2-(2-Chloro-phen-yl)-2-oxoeth-yl]-2,3-dihydro-1λ(6),2-benzothia-zole-1,1,3-trione.
abstract: The asymmetric unit of the title compound, C(15)H(10)ClNO(4)S, contains two independent conformers wherein the 2-chloro-phenyl group in one is rotated by approximately 180° compared to the other mol-ecule. This affects the S-N-C-C(=O) and N-C-C(=O)-C torsion angles giving vlaues of -87.0 (2) and 158.7 (2)° in one mol-ecule and -104.3 (2) and -173.4 (2)° in the other. The benzisothia-zole ring systems in the two mol-ecules are essentially planar (r.m.s. deviations = 0.017 and 0.010 Å) and form dihedral angles of 73.53 (7) and 73.26 (6)° with the benzene rings. In the crystal, there are weak π-π inter-actions between the benzene rings of the benzisothia-zole groups and symmetry-related chloro-benzene rings with centroid-centroid distances of 3.6178 (13) and 3.6267 (15) Å. In addition, pairs of weak inter-molecular C-H⋯O hydrogen bonds form inversion dimers which are connected by further C-H⋯O hydrogen bonds into a three-dimensional network.
authors.forename: Nazia
authors.initials: N
authors.lastname: Sattar
authors.forename: Hamid Latif
authors.initials: HL
authors.lastname: Siddiqui
authors.forename: Naveed
authors.initials: N
authors.lastname: Ahmad
authors.forename: Tanvir
authors.initials: T
authors.lastname: Hussain
authors.forename: Masood
authors.initials: M
authors.lastname: Parvez