Crystal structures of 2-(4-nitrophenyl)-3-phenyl-2,3-dihydro-4<i>H</i>-1,3-benzothiazin-4-one and 2-(2-nitrophenyl)-3-phenyl-2,3-dihydro-4<i>H</i>-1,3-benzothiazin-4-one
Acta crystallographica. Section E, Crystallographic communications