(3Z)-3-Hydrazinylideneindolin-2-one

Abstract

The title molecule, C8H7N3O, is almost planar, with a maximum deviation of 0.0232 (2) Å from the least-squares plane. The Z conformation of the C=N double bond is stabilized by an intramolecular N—H...O hydrogen bond. In the crystal, adjacent molecules are linked by intermolecular N—H...N and N—H...O hydrogen bonds, forming zigzag sheets parallel to the c axis; the sheets are further stabilized by π–π interactions [centroid–centroid distance = 3.7390 (10) Å].