title: 2,3-Dihydro-1λ(6),2-benzothia-zine-1,1,4-trione.
abstract: In the title compound, C(8)H(7)NO(3)S, the benzene ring is oriented at a dihedral angle of 69.25 (7)° to the S and O atoms of the sulfonyl group. The heterocyclic ring approximates to an envelope, with the N atom in the flap position. In the crystal, mol-ecules are linked by N-H⋯O(c) (c = carbon-yl) hydrogen bonds, forming C(5) chains along [001]. Two R(2) (2)(10) loops arise from pairs of C-H⋯O hydrogen bonds and a weak aromatic π-π stacking inter-action [centroid-centorid separation = 3.8404 (11) Å] also occurs.
authors.forename: Farhana
authors.initials: F
authors.lastname: Aman
authors.forename: Waseeq Ahmad
authors.initials: WA
authors.lastname: Siddiqui
authors.forename: Adnan
authors.initials: A
authors.lastname: Ashraf
authors.forename: M Nawaz
authors.initials: MN
authors.lastname: Tahir