organic compounds
The title compound, C19H25N5, adopts pseudo-C2 symmetry in which the non-substituted N atoms of the pyrazole rings are on opposite sides of the pyridine plane. The packing involves C—Hπ, π–π, C—HN and hydrophobic CH3CH3 interactions, which are responsible for the observed columnar arrangement.
organic compounds
The title molecular complex, C9H7NO·C7H5NO4, owes its formation to an intermolecular hydrogen bond between the O—H and N—O groups, with an OO distance of 2.514 (2) Å. The dihedral angle between the planes of the isoquinoline N-oxide and nitrobenzoic acid rings of the complex is 49.91 (4)°. The crystal structure exhibits overlap between the aromatic rings of the molecules in the [101] direction.