Akkurt, M. and Mohamed, S.K. and Kennedy, A.R. and Abdelhamid, A.A. and Miller, G.J. and Albayati, M.R. (2013) 12-(2-Hydroxy-6-oxocyclohex-1-enyl)-9,10-dihydro-8H-benzo[a]xanthen-11(12H)-one. Acta Crystallographica Section E: Structure Reports, 69 (10). o1558-o1559. ISSN 1600-5368 (https://doi.org/10.1107/S1600536813025324)

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In the xanthenone system of the title compound, C23H20O4, the pyran ring has a maximum deviation of 0.111 (1) Å 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⋯O and O - H⋯O hydrogen bonds, forming a two-dimensional network parallel to (110). A C - H⋯π interaction occurs between these networks.


Akkurt, M., Mohamed, S.K., Kennedy, A.R. ORCID logoORCID: https://orcid.org/0000-0003-3652-6015, Abdelhamid, A.A., Miller, G.J. and Albayati, M.R.;