7-Hydroxyindan-1-one

In the title compound, C9H8O2, an intramolecular O—H...O hydrogen bond generates an S(6) ring. The dihedral angle between the mean plane of the S(6) ring and the benzene ring is 1.89 (2)°. In the crystal, inversion-related molecules are linked by pairs of O—H...O hydrogen bonds, forming a cyclic dimers with R22(12) graph-set motif. Weak intermolecular C—H...Ocarbonyl and C—H...Ohydroxy hydrogen bonds link the dimers into chains along [010], generating two C(6) motifs that overlap three C atoms, forming R22(8) ring motifs.