Date Published: February 01, 2012
Publisher: International Union of Crystallography
Author(s): Hadi Kargar, Reza Kia, Mahbubeh Haghshenas, Muhammad Nawaz Tahir.
In the title molecule, C19H18Br4N2O2, the dihedral angle between the benzene rings is 73.9 (2)°. Two intramolecular N—H⋯O hydrogen bonds make S(6) ring motifs. In the crystal, molecules are linked via C—H⋯O interactions, forming chains propagating along the a-axis directon. A short C⋯Br [3.401 (5) Å] contact is present in the crystal structure, which is further stabilized by a π–π interaction [centroid–centroid distance = 3.739 (3) Å].
For standard bond lengths, see: Allen et al. (1987 ▶). For hydrogen bond motifs, see: Bernstein et al. (1995 ▶). For related structures, see: Kargar et al. (2011 ▶); Kia et al. (2010 ▶).