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(E)-9-(4-Chloro-styr-yl)-3,4,5,6,7,9-hexa-hydro-2H-xanthene-1,8-dione.

ABSTRACT: In the title compound, C(21)H(19)ClO(3), the two cyclo-hexenone rings adopt half-chair conformations, whereas the pyran ring adopts a boat conformation. The 4-chloro-phenyl ring is almost perpendicular to the plane through the four C atoms of the pyran ring [dihedral angle = 87.97?(6)°]. In the crystal, weak C-H?O hydrogen bonds link the mol-ecules into a chain parallel to the a-axis.

SUBMITTER: Lee JK

PROVIDER: S-EPMC3275246 | biostudies-literature | 2012 Feb

REPOSITORIES: biostudies-literature

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(E)-9-(4-Chloro-styr-yl)-3,4,5,6,7,9-hexa-hydro-2H-xanthene-1,8-dione.

Lee Jae Kyun JK Pae Ae Nim AN Cho Yong Seo YS Cha Joo Hwan JH

Acta crystallographica. Section E, Structure reports online 20120121 Pt 2

In the title compound, C(21)H(19)ClO(3), the two cyclo-hexenone rings adopt half-chair conformations, whereas the pyran ring adopts a boat conformation. The 4-chloro-phenyl ring is almost perpendicular to the plane through the four C atoms of the pyran ring [dihedral angle = 87.97 (6)°]. In the crystal, weak C-H⋯O hydrogen bonds link the mol-ecules into a chain parallel to the a-axis. ...[more]

PMID: 22347102

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