Date Published: April 01, 2011
Publisher: International Union of Crystallography
Author(s): Kew-Yu Chen, Yuh-Sheng Wen, Tzu-Chien Fang, Yuan-Jay Chang, Ming-Jen Chang.
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 , generating two C(6) motifs that overlap three C atoms, forming R22(8) ring motifs.
For the spectroscopy and the dynamic processes related to the intramolecular proton transfer of the title compound, see: Aquino et al. (2005 ▶); Chou et al. (1991 ▶); Nagaoka et al. (1984 ▶); Nishiya et al. (1986 ▶). For its preparation, see: Tadić et al. (1988 ▶). For related structures, see: Li et al. (2007 ▶); Saeed et al. (2007 ▶). For graph-set theory, see: Bernstein et al. (1995 ▶).