The analysis of the 13C NMR spectra of several 2,3,6,7-tetraalkoxy-9,10-dihalomethyl-9,10-dihydroanthracenes showed a strong dependence of the chemical shift values on the orientation of the halomethyl groups. On this basis it was possible to determine both the configuration (cis or trans) and conformation of the isomers, even if only one isomer was available.
对几种2,3,6,7-四烷氧基-9,10-二卤甲基-
9,10-二氢蒽的13C NMR 谱分析表明,
化学位移值与卤甲基团的取向有强烈的依赖关系。在此基础上,即使只有一个异构体可供研究,也能确定异构体的构型(顺式或反式)和构象。