3-Chloro-4-[2-(4-chlorobenzylidene)hydrazinylidene]-1-methyl-3, 4-dihydro-1H-2λ6,1-benzothiazine-2,2-dione

Saeed Ahmad, Muhammad Shafiq*, M. Nawaz Tahir, William T. A. Harrison, Islam Ullah Khan

*Corresponding author for this work

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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 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.

Original languageEnglish
Pages (from-to)o422-o423
Number of pages2
JournalActa Crystallographica Section E: Structure Reports Online
Issue number3
Early online date23 Feb 2013
Publication statusPublished - 1 Mar 2013

Bibliographical note

MS acknowledges the HEC Pakistan for providing a PhD fellowship and the UOS, Sargodha, for X-ray diffraction facility.


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