Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 2 (February 2013)


organic compounds



ld2091 scheme

Acta Cryst. (2013). E69, o200    [ doi:10.1107/S1600536813000202 ]

1-Ethyl-4-{2-[1-(4-methylphenyl)ethylidene]hydrazinylidene}-3,4-dihydro-1H-2[lambda]6,1-benzothiazine-2,2-dione

M. Shafiq, M. N. Tahir, W. T. A. Harrison, T. H. Bokhari and M. Safder

Abstract: In the title compound, C19H21N3O2S, the dihedral angle between the aromatic rings is 6.7 (2)° and the C=N-N=C torsion angle is 178.0 (2)°. The conformation of the thiazine ring is an envelope, with the S atom displaced by 0.802 (2) Å from the mean plane of the other five atoms (r.m.s. deviation = 0.022 Å). In the crystal, molecules are linked by C-H...O interactions, generating C(5) chains propagating in [010]. A weak C-H...[pi] interaction is also observed.


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