1,3-bis(4-nitrophenyl)triazene

Article abstract of DOI:10.1107/S0108270103012125

The structure of the title compound, C₁₂H₉N ₅O₄ reveals an almost planar molecule (r.m.s. deviation = 0.061 A), in which the interplanar angle between the phenyl rings is 5.7 (1)° and the largest interplanar angle is that between the phenyl ring and the nitro group of one of the 4-nitrophenyl substituents [8.8 (3)°]. The observed molecular conformation suggests a delocalization of π-electrons extended over the diazoamine group and the terminal aryl substituents. Intermolecular N-H...O interactions between the twofold screw-related molecules give rise to helical chains along the [010] direction. Intermolecular C-H...O interactions then generate sheets of molecules in the (101) plane, and these sheets are held together by N...C and O...O π-π interactions.