3-(6-Bromo-4-oxo-4H-chromen-3-yl)-3,4-dihydro-2H-1,2,4-benzothia-diazine-1,1-dione

The mol-ecular structure of the title compound, C(16)H(11)BrN(2)O(4)S, is very similar to that of the previously reported fluoro analogue [al-Rashida et al. (2010 ▶). Acta Cryst. E66, o2707]. The mean planes of the bicyclic chromone system and the benzene ring of the benzothia-diazine derivative make a dihedral angle of 58.23 (8)°. An intra-molecular N-H⋯O hydrogen bond occurs. In the crystal, mol-ecules are linked into layers by N-H⋯O and C-H⋯O hydrogen bonds, generating an infinite two-dimensional network.