title: 3-Chloro-4-[2-(4-chloro-benzyl-idene)hydrazinyl-idene]-1-methyl-3,4-dihydro-1H-2λ(6),1-benzothia-zine-2,2-dione.
abstract: In the title compound, C16H13Cl2N3O2S, the dihedral angle between the aromatic rings is 6.62 (2)° and the C=N-N=C torsion angle is 176.2 (4)°. The thia-zine ring shows an envelope conformation, with the S atom displaced by 0.633 (6) Å from the mean plane of the other five atoms (r.m.s. deviation = 0.037 Å). The Cl atom is an an axial conformation and is displaced by 2.015 (6) Å from the thia-zine ring plane. In the crystal, mol-ecules are linked by C-H⋯O inter-actions, generating a three-dimensional network. Very weak aromatic π-π stacking inter-actions [centroid-centroid separations = 3.928 (2) Å] are also observed.
authors.affiliation: Department of Chemistry, Gomal University, Dera Ismail Khan, NWFP, Pakistan.
authors.forename: Saeed
authors.initials: S
authors.lastname: Ahmad
authors.forename: Muhammad
authors.initials: M
authors.lastname: Shafiq
authors.forename: M Nawaz
authors.initials: MN
authors.lastname: Tahir
authors.forename: William T A
authors.initials: WT
authors.lastname: Harrison
authors.forename: Islam Ullah
authors.initials: IU
authors.lastname: Khan