12-(2-Hydroxy-6-oxocyclohex-1-enyl)-9,10-dihydro-8H-benzo[a]xanthen-11(12H)-one

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AKKURT M., Mohamed S. K., Kennedy A. R., Abdelhamid A. A., Miller G. J., Albayati M. R.

ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, vol.69, 2013 (ESCI)

• Publication Type: Article / Article
• Volume: 69
• Publication Date: 2013
• Doi Number: 10.1107/s1600536813025324
• Journal Name: ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
• Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus
• Erciyes University Affiliated: Yes

Abstract

In the xanthenone system of the title compound, C23H20O4, the pyran ring has a maximum deviation of 0.111 (1) angstrom from planarity and the outer cyclohexene ring exhibits a puckered conformation. The three methylene C atoms of the cyclohexene ring bonded to the pyran unit are disordered over two sets of sites [occupancies = 0.570 (3) and 0.430 (3)]. In the crystal, molecules are linked by C-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen bonds, forming a two-dimensional network parallel to (110). A C-H center dot center dot center dot pi interaction occurs between these networks.