In the molecule of the title compound, C17H20N4O5, there are two intramolecular N-H...O hydrogen bonds having amidic and nitro-group O atoms as the acceptors and together forming a three-centre N-H...(O)(2) system. These interactions appear to play an important role in controlling the relative orientation of the pyrazole and aryl rings. The bond distances provide evidence for some polarization of the electronic structure. Molecules are linked into simple chains by a single C-H...O hydrogen bond.
|Number of pages
|Acta Crystallographica Section C: Crystal Structure Communications
|Published - Jan 2011
- HYDROGEN-BONDED FRAMEWORK