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Acta Cryst. (2013). E69, o1679
[ doi:10.1107/S1600536813028389 ]

2-(3-Nitro­phen­yl)-3-phenyl-2,3-di­hydro-4H-1,3-benzo­thia­zin-4-one

H. P. Yennawar, L. J. Silverberg, M. J. Minehan and J. Tierney

Abstract: The title compound, C20H14N2O3S, has three aromatic rings, viz. (i) a phenyl ring, (ii) a 3-nitro­phenyl and (iii) a 1,3-benzo­thia­zine fused-ring system. The dihedral angle between (i) and (ii) is 85.31 (15)°, between (ii) and (iii) is 81.33 (15)° and between (i) and (iii) is 75.73 (15)°. The six-membered 1,3-thia­zine ring has an envelope conformation with the C atom in the 2-position forming the flap. In the crystal, mol­ecules are linked by weak C-H...O inter­actions, forming a three-dimensional network.


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