| Summary: | The molecule of the title compound, C14H13N5O2, is approximately planar (r.m.s deviation for all non-H atoms = 0.093 Å), with the planes of the two pyridine rings inclined to one another by 5.51 (7)°. The oxime group is syn to the amide group, probably due to the formation of an intramolecular N—H...N hydrogen bond that forms an S(6) ring motif. In the crystal, molecules are linked by pairs of bifurcated O—H...(O,N) hydrogen bonds, forming inversion dimers. The latter are linked via C—H...O and C—H...N hydrogen bonds, forming sheets lying parallel to (502). The sheets are linked via π–π stacking interactions [inter-centroid distance = 3.7588 (9) Å], involving the pyridine rings of inversion-related molecules, forming a three-dimensional structure.
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