6-Hydroxy-1,2-dihydro-4H-pyrrolo[3,2,1-ij]quinolin-4-one

Abstract

The molecule of the title compound, C11H9NO2, is essentially planar [r.m.s. deviation of the non-H atoms = 0.056 (1) Å]. In the crystal, strong O—H...O hydrogen bonds form zigzag chains along the b axis. The molecules form stacks along the a axis due to π–π interactions, the shortest distance between the centroids of the benzene and pyridinone rings being 3.6146 (7) Å