ANGULAR-DEPENDENCE OF THE VICINAL INTERPROTON SPIN-SPIN COUPLING IN SILACYCLOHEXANES - CONFORMATIONAL ENERGY TERM OF THE METHYL-GROUP IN 1-METHYL-1-SILACYCLOHEXANE

被引：29

作者：

CARLEER, R ^{[1
]}

ANTEUNIS, MJO ^{[1
]}

机构：

[1] STATE UNIV GHENT,DEPT ORGAN CHEM,NMR SPECTROSCOP UNIT,B-9000 GHENT,BELGIUM

来源：

ORGANIC MAGNETIC RESONANCE | 1979年 / 12卷 / 12期

关键词：

D O I：

10.1002/mrc.1270121205

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An approximate Karplus‐Conroy relationship between the vicinal coupling constants J(HSiCH) in a silaethane fragment and the corresponding torsional angles τ in silacyclohexanes is proposed. The relationship 3J(HSiCH) VS τ is asymmetric. The 1H NMR parameters and conformational features of cis‐ and trans‐3,5‐dimethyl‐1‐silacyclonexane and 3‐silabicyclo[3.2.1]octane are discussed, and the conformational energy term for the methyl group in 1‐methyl‐1‐silacyclohexane is found to be approximately 1.45 kJ mole−1 in favour of the axial position for the methyl group, in good agreement with previously calculated values. Copyright © 1979 Heyden & Son Ltd.

引用

页码：673 / 678

页数：6

共 18 条

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