3,4,5,6-tetrafluoro-1,2,7,8-tetrakis(trifluoromethyl)phenanthrene and 3,4,7,8-tetrafluoro-1,2,5,6-tetrakis(trifluoromethyl)-anthracene

被引：2
|
作者：
Swenson, DC [1 ]
Yamamoto, M [1 ]
Burton, DJ [1 ]
机构：
[1] Univ Iowa, Dept Chem, Iowa City, IA 52242 USA
来源：
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS | 1998年 / 54卷
关键词：
D O I：
10.1107/S0108270197019951
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A photocyclization reaction produces two isomers of C18H2F16. Crystal structures show the major product to be 3,4,5,6-tetrafluoro-1,2,7,8-tetrakis(trifluoromethyl)phenanthrene, (1), and the minor product to be 3,4,7,8-tetrafluoro-1,2,5,6-tetrakis(trifluoromethyl)-anthracene, (2). The phenanthrene skeleton in (1) is distorted from planarity by steric interaction between the 4- and 7-F atoms. Compound (2) is centered on an inversion center; the anthracene skeleton is nearly planar, with the trifluoromethyl atoms displaced on either side of the molecular plane.
引用
收藏
页码：846 / 849
页数：4
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