Acta Cryst. (2008). E64, o689  [ doi:10.1107/S1600536808006156 ]

6-Amino-3-methyl-4-(4-nitrophenyl)-1-phenylpyrazolo[3,4-b]pyridine-5-carbonitrile

X.-Y. Zhang, X.-Y. Li, X. Wang, X.-S. Fan and G.-R. Qu

Abstract: The title compound, C₂₀H₁₄N₆O₂, contains four rings. The dihedral angle between the pyridine ring and the pyrazole ring is 1.9 (1)°, i.e. almost coplanar, which gives rise to a conjugated structure. The dihedral angle between the nitro-substituted phenyl ring and the pyridine ring is 76.3 (1)° and that between the pyrazole ring and the non-substituted phenyl ring is 40.5 (1)°. In the crystal structure, symmetry-related molecules are linked by N-HO and C-HN hydrogen bonds.

Online 12 March 2008

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