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12-(2-Hy-droxy-6-oxo-cyclo-hex-1-en-yl)-9,10-di-hydro-8H-benzo[a]xanthen-11(12H)-one.

ABSTRACT: 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 cyclo-hexene ring exhibits a puckered conformation. The three methyl-ene C atoms of the cyclo-hexene ring bonded to the pyran unit are disordered over two sets of sites [occupancies = 0.570?(3) and 0.430?(3)]. In the crystal, mol-ecules are linked by C-H?O and O-H?O hydrogen bonds, forming a two-dimensional network parallel to (110). A C-H?? inter-action occurs between these networks.

SUBMITTER: Akkurt M

PROVIDER: S-EPMC3790420 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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12-(2-Hy-droxy-6-oxo-cyclo-hex-1-en-yl)-9,10-di-hydro-8H-benzo[a]xanthen-11(12H)-one.

Akkurt Mehmet M Mohamed Shaaban K SK Kennedy Alan R AR Abdelhamid Antar A AA Miller Gary J GJ Albayati Mustafa R MR

Acta crystallographica. Section E, Structure reports online 20130918 Pt 10

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 cyclo-hexene ring exhibits a puckered conformation. The three methyl-ene C atoms of the cyclo-hexene ring bonded to the pyran unit are disordered over two sets of sites [occupancies = 0.570 (3) and 0.430 (3)]. In the crystal, mol-ecules are linked by C-H⋯O and O-H⋯O hydrogen bonds, forming a two-dimensional network parallel to (110). A C-H⋯π inter-action oc ...[more]

PMID: 24098239

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