F-19 NUCLEAR-MAGNETIC-RESONANCE STUDIES OF HALOGENATED PROPANES

被引:11
|
作者
TANUMA, T
OHNISHI, K
OKAMOTO, H
MIYAJIMA, T
MORIKAWA, S
机构
[1] Research Center, Asahi Glass Co., Kanagawa, 221, 1150 Hazawa-cho, Kanagawa-ku, Yokoharna-shi
关键词
D O I
10.1016/S0022-1139(00)82839-0
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The relationship between F-19 chemical shifts in halogenated propanes and their structures are elucidated using MNDO calculations to determine the population of rotamers. The pairs of atoms gauche to a fluorine atom and van der Waals interaction between the two terminal substituents are responsible for the F-19 chemical shifts. The differences among chemical shifts in diastereomers are also discussed in terms of the conformation of the molecule.
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页码:259 / 284
页数:26
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