HYPERCONJUGATION IN TWISTED PI-RADICALS

被引：36
作者：
BERNDT, A
机构：
来源：
TETRAHEDRON | 1969年 / 25卷 / 01期
关键词：
D O I：
10.1016/S0040-4020(01)99456-6
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Unexpected large as well as small ESR-proton hyperfine coupling constants are explained by hyperconjugation in twisted π-systems. This type of hyperconjugation has been postulated by Mulliken for the 90° twisted ethylene. A method to prove this hypothesis is proposed and applied successfully till now-to unexpected large couplings. The borderline of this method is discussed in connection with an anion radical of an α,β-unsaturated nitro compound twisted to about 90° at the CαCβ-bond. © 1969.
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页码：37 / &
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