Date Published: August 01, 2009
Publisher: International Union of Crystallography
Author(s): Hongqi Li, B. K. Sarojini, B. Narayana, H. S. Yathirajan, William T. A. Harrison.
In the title compound, C15H12Br2N2O2, the molecule adopts an E conformation about the C=N double bond and a transoid conformation about the central N—N bond, with a C(=O)—N—N—C(H) dihedral angle of 169.4 (4)°. In the crystal, molecules are linked by N—H⋯O hydrogen bonds, leading to C(4) chains. The packing also features slipped π–π stacking interactions, with a centroid–centroid separation of 3.838 (3) Å and a slippage of 1.19 Å.
For related structures and background, see: Narayana et al. (2007 ▶); Butcher et al. (2007 ▶).