N′-[(E)-1-(4-Bromophenyl)ethylidene]-4-hydroxy-2-methyl-1, 1-dioxo-2H-1,2-benzothiazine-3-carbohydrazide

Abstract

The six-membered heterocycle in the title compound, C 18H 16BrN 3O 4S, adopts a sofa conformation. Intra-molecular N-H⋯N and O-H⋯O hydrogen bonds stabilize the mol-ecular conformation by forming a five- and a six-membered ring, respectively. The crystal packing is stabilized by inter-molecular C-H⋯O hydrogen bonds.