Date Published: February 01, 2012
Publisher: International Union of Crystallography
Author(s): Masoumeh Hosseinzadeh, Mat Ropi Mukhtar, Mohammad Ali Khalilzadeh, Hamid Khaledi.
The title compound, C16H14O5, is a triclinic polymorph of a previously reported monoclinic structure [Hosseinzadeh et al. (2011 ▶). Acta Cryst. E67, o1544]. The molecule is roughly planar, the r.m.s. deviation from the least-squares plane of all non-H atoms being 0.092 Å. In the crystal, adjacent molecules are linked through C—H⋯O hydrogen bonds into an infinite two-dimensional network parallel to (011). The layers are further connected via C—H⋯π interactions, forming a three-dimensional structure. Intramolecular O—H⋯O and C—H⋯O hydrogen bonds are also observed.
For the crystal structure of the monoclinic polymorph, see: Hosseinzadeh et al. (2011 ▶).