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Crystal structure of 10a-hy-droxy-9-(3-nitro-phen-yl)-3,6-diphenyl-3,4,5,6,7,8a,9,10a-octa-hydro-1H-xanthene-1,8(2H)-dione.

ABSTRACT: In the octa-hydroxanthenedione unit of the title compound, C31H27NO6, the central di-hydro-pyran ring shows an envelope conformation, while the bilateral cyclo-hexene and cyclo-hexane rings adopt a half-boat conformation and a chair conformation, respectively. The nitro-benzene ring is twisted with respect to the two benzene rings, making dihedral angles of 63.1?(1) and 63.0?(1)°. In the crystal, O-H?O hydrogen bonds link the mol-ecules into supra-molecular chains propagating along the a-axis direction.

SUBMITTER: Zhang XY 

PROVIDER: S-EPMC4719825 | biostudies-other | 2015 Dec

REPOSITORIES: biostudies-other

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Crystal structure of 10a-hy-droxy-9-(3-nitro-phen-yl)-3,6-diphenyl-3,4,5,6,7,8a,9,10a-octa-hydro-1H-xanthene-1,8(2H)-dione.

Zhang Xin-Yuan XY   Hu Bing-Xiang BX   Zhou Ze-Yu ZY   Zhou Lei L   Wang Fang-Ming FM  

Acta crystallographica. Section E, Crystallographic communications 20151121 Pt 12

In the octa-hydroxanthenedione unit of the title compound, C31H27NO6, the central di-hydro-pyran ring shows an envelope conformation, while the bilateral cyclo-hexene and cyclo-hexane rings adopt a half-boat conformation and a chair conformation, respectively. The nitro-benzene ring is twisted with respect to the two benzene rings, making dihedral angles of 63.1 (1) and 63.0 (1)°. In the crystal, O-H⋯O hydrogen bonds link the mol-ecules into supra-molecular chains propagating along the a-axis di  ...[more]

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