title: Methyl 4-[(1-acetyl-3-tert-butyl-1H-pyrazol-5-yl)amino]-3-nitrobenzoate.
abstract: In the molecule of the title compound, C(17)H(20)N(4)O(5), 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.
authors.affiliation: Departamento de Química, Universidad de Valle, AA 25360 Cali, Colombia.
authors.forename: Edwar
authors.initials: E
authors.lastname: Cortés
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Abonía
authors.forename: Justo
authors.initials: J
authors.lastname: Cobo
authors.forename: Christopher
authors.initials: C
authors.lastname: Glidewell