A triclinic polymorph of (E)-2-(1-hydroxy-3-phenylprop-2-en-1-ylidene)-4,5-dimethoxycyclopent-4-e ne-1,3-dione

作者：Hosseinzadeh Masoumeh; Mukhtar Mat Ropi; Khalilzadeh Mohammad Ali; Khaledi Hamid^*

来源：Acta Crystallographica Section E-Structure Reports Online, 2012, 68: O453-U1093.

DOI：10.1107/S1600536812001043

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 angstrom. In the crystal, adjacent molecules are linked through C-H center dot center dot center dot O hydrogen bonds into an infinite two-dimensional network parallel to (011). The layers are further connected via C-H center dot center dot center dot pi interactions, forming a three-dimensional structure. Intramolecular O-H center dot center dot center dot O and C-H center dot center dot center dot O hydrogen bonds are also observed.

• 出版日期2012-2