(E)-9-(4-Fluorostyryl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-2H-xanthene-1,8-dione

Title
(E)-9-(4-Fluorostyryl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-2H-xanthene-1,8-dione
Authors
이재균민선준조용서차주환원성옥
Keywords
xanthene; Hydrogen-bond geometry; half-chair conformation
Issue Date
2013-06
Publisher
Acta crystallographica Section E, Structure reports online. [computer file]
Citation
VOL E69, NO 6, o985-1-o985-14
Abstract
In the title compound, C25H27FO3, each of the cyclo­hexenone rings adopts a half-chair conformation, whereas the six-membered pyran ring adopts a flattened boat conformation, with the O and methine C atoms deviating by 0.0769 (15) and 0.196 (2) Å, respectively, from the plane of the other four atoms (r.m.s. deviation = 0.004 Å). The C=C double bond adopts an E conformation. The dihedral angle between the benzene and pyran (all atoms) rings is 89.94 (10)°. In the crystal, weak C—H...O hydrogen bonds link the mol­ecules into chains running parallel to the b axis.
URI
http://pubs.kist.re.kr/handle/201004/46077
ISSN
16005368
Appears in Collections:
KIST Publication > Article
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