1,8H-perfluorocyclooctatetraene and its congeners.: dynamic equilibrium among four valence isomers

被引：0

作者：

Takenaka, NE ^{[1
]}

Hamlin, R ^{[1
]}

Spector, T ^{[1
]}

Junk, CP ^{[1
]}

Lemal, DM ^{[1
]}

机构：

[1] Dartmouth Coll, Dept Chem, Hanover, NH 03755 USA

来源：

ISRAEL JOURNAL OF CHEMISTRY | 1999年 / 39卷 / 02期

关键词：

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Synthesized from hexafluorobenzene, the title compound was found to interconvert readily via bond-shift isomerization and electrocyclization with significant amounts of three other valence isomers. The mobile equilibria were revealed by F-19 NMR spectroscopy, and spin-saturation transfer experiments played a key role in identifying the isomers, tracing their interconversions, and assigning their spectra. The influence of fluorine substitution on the stability of carbon-carbon double bonds and of 4-membered rings is discussed in the light of these results.

引用

页码：141 / 146

页数：6

共 17 条

[1]

BALTHIS JH, 1939, INORG SYNTHESIS, V1, P122

[2] SYMPTOMS OF 1,3 CARBON-CARBON INTERACTIONS IN CYCLOBUTANE AND CYCLOBUTYL CATION [J].