作者:W.H. Laarhoven、R.J.F. Nivard
DOI:10.1016/0040-4020(76)87032-9
日期:1976.1
Analysis of the NMR spectra of five heptahelicenes and some related compounds reveals that annelation of heptahelicene by one or more benzo groups results in a conformational change of the helix. The extent and direction of this change was deduced correctly from the NMR spectra by application only of the ring current theory and the influence of Van der Waals forces, as could be established from the
对五种庚二烯和一些相关化合物的NMR光谱分析表明,庚二烯通过一个或多个苯并基团的脱核反应会导致螺旋的构象变化。仅通过应用环电流理论和范德华力的影响就可以从NMR谱正确推断出这种变化的程度和方向,这可以通过庚烯和三苯并衍生物12的X射线分析确定。