3-Chloro-4-[2-(4-chloro­benzyl­idene)hydrazinyl­idene]-1-methyl-3,4-dihydro-1H-2λ(6),1-benzothia­zine-2,2-dione

In the title compound, C(16)H(13)Cl(2)N(3)O(2)S, the dihedral angle between the aromatic rings is 6.62 (2)° and the C=N—N=C torsion angle is 176.2 (4)°. The thia­zine 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 thia­zine ring plane. In the crystal, mol­ecules are linked by C—H⋯O inter­actions, generating a three-dimensional network. Very weak aromatic π–π stacking inter­actions [centroid–centroid separations = 3.928 (2) Å] are also observed.