Lee, Jae Kyun Pae, Ae Nim Cho, Yong Seo Cha, Joo Hwan 2024-01-20T15:31:57Z 2024-01-20T15:31:57Z 2021-09-05 2012-02 1600-5368 https://pubs.kist.re.kr/handle/201004/129573 In the title compound, C21H19ClO3, the two cyclohexenone rings adopt half-chair conformations, whereas the pyran ring adopts a boat conformation. The 4-chlorophenyl ring is almost perpendicular to the plane through the four C atoms of the pyran ring [dihedral angle = 87.97 (6)degrees]. In the crystal, weak C-H center dot center dot center dot O hydrogen bonds link the molecules into a chain parallel to the a-axis. English WILEY-BLACKWELL (E)-9-(4-Chlorostyryl)-3,4,5,6,7,9-hexahydro-2H-xanthene-1,8-dione Article 10.1107/S1600536812002139 1 ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE, v.68, pp.O501 - U1535 ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE 68 O501 U1535 scie scopus 000301059200131 2-s2.0-84863012755 Crystallography Crystallography Article data-to-parameter ratio = 13.1 mean σ(C-C) = 0.007 ？ R factor = 0.059 single-crystal X-ray study T = 296 K wR factor = 0.157