Acta Cryst. (2013). E69, o165
[ doi:10.1107/S1600536812051513 ]

3-Chloro-1-methyl-4-[2-(3-phenylallylidene)hydrazinylidene]-3,4-dihydro-1H-2⁶,1-benzothiazine-2,2-dione

M. Shafiq, M. N. Tahir, W. T. A. Harrison, I. U. Khan and S. Shafique

Abstract: In the title compound, C₁₈H₁₆ClN₃O₂S, the dihedral angle between the aromatic rings is 4.81 (2)° and the alkyl chain takes on an extended conformation [N-C-C-C = 179.2 (4)°]. The conformation of the thiazine ring is an envelope, with the S atom displaced by -0.805 (3) Å from the mean plane of the other five atoms (r.m.s. deviation = 0.046 Å). The Cl atom is an axial conformation and is displaced by 1.761 (4) Å from the thiazine ring plane. In the crystal, inversion dimers linked by pairs of C-HO interactions generate R₂²(20) loops and further C-HO hydrogen bonds link the dimers into (001) sheets. Weak aromatic - stacking interactions [centroid-centroid separations = 3.870 (3) and 3.883 (3) Å] are also observed.

Copyright © International Union of Crystallography
IUCr Webmaster