4-Hydroxy-N-(2,4,6-tribromophenyl)-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide

Abstract

In the title compound, C15H19Br3N2O 4S, the thia-zine ring adopts a distorted half-chair conformation. The enolic H atom is involved in an intra-molecular O - H⋯O hydrogen bond, forming a six-membered ring. In the crystal, the mol-ecules are linked into a three-dimensional network through inter-molecular N - H⋯O, N - H⋯Br and O - H⋯Br hydrogen bonds.