5,6-Dibromo-1H-indole-2,3-dione

Abstract

The title compound, C 8 H 3 Br 2 NO 2 , crystallizes with two near planar molecules in the asymmetric unit, with non-H atoms possessing mean deviations from planarity of 0.012 and 0.014 Å . The two molecules are connected by an N-HÁ Á ÁO and a C-HÁ Á ÁO hydrogen bond. In the crystal, molecules connect through a series of bifurcated N-(H,H)Á Á ÁO hydrogen bonds, forming chains propagating along the [111] direction. The molecules are further linked through intermolecular halogen interactions, including a BrÁ Á ÁO close contact of 2.9409 (3) Å , and two C-HÁ Á ÁBr interactions of 3.777 (3) and 3.845 (3) Å . These interactions link the chains into sheets lying parallel to the (123) plane.