2-Benzoyl-2H-1,4-benzothiazin-3(4H)-one

Abstract

In the title compound, C15H11NO2S, the dihedral angle between the aromatic rings is 80.35 (7)°. The heterocyclic six-membered ring is not planar: the puckering parameters of this ring are Q = 0.5308 (15) Å, θ = 63.11 (18) and ϕ = 23.5 (2)°. The mol­ecules are linked into inversion dimers with R 2 2(8) ring motifs by pairs of N—H⋯O hydrogen bonds. The dimers are inter­linked into polymeric sheets extending parallel to the bc plane by C—H⋯O hydrogen bonds, generating R 2 1(7) ring motifs. π–π inter­actions occur between the benzoyl phenyl rings with centroid–centroid separations of 3.9187 (15) Å.