Acta Cryst. (2011). E67, o3488 [ doi:10.1107/S1600536811050586 ]
Abstract: In the title compound, C25H18N2O2, the pyrazolo[5,1-a]isoquinoline ring system is approximately planar [maximum deviation = 0.027 (2) Å] and is oriented at dihedral angles of 57.22 (6) and 71.36 (7)° with respect to the two phenyl rings. The phenyl rings are twisted to each other by a dihedral angle of 66.33 (8)°. A weak intramolecular C-HO hydrogen bond occurs. In the crystal, weak C-H interactions are present.
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