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Acta Cryst. (2014). E70, o614
[ doi:10.1107/S1600536814009179 ]

(2Z)-2-Benzyl­idene-4-(prop-2-yn-1-yl)-2H-1,4-benzo­thia­zin-3(4H)-one

N. K. Sebbar, A. Zerzouf, E. M. Essassi, M. Saadi and L. El Ammari

Abstract: The mol­ecule of the title compound, C18H13NOS, is build up from two fused six-membered rings, with the heterocyclic component linked to a benzyl­idene group and to a prop-2-yn-1-yl chain. The six-membered heterocycle adopts a distorted screw-boat conformation. The prop-2-yn-1-yl chain is almost perpendicular to the mean plane through benzo­thia­zine as indicated by the C-N-C-C torsion angle of 86.5 (2)°. The dihedral angle between the benzene rings is 47.53 (12)°. There are no specific inter­molecular inter­actions in the crystal packing.


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