硝基苯酚异构体极性与吸附力初探

对硝基苯酚和硝基苯胺的异构体的极性及其在吸附薄层色谱法中，与固定相的吸附力，进行了２４例吸附薄层色谱分析，结果表明，它们的迁移速度，除有２例特殊外，其余２２例皆为：邻位最快，间位次之，对位最慢。说明其吸附力对位最强，间位次之，邻位最弱。利用“矢量加合原理”，对硝基苯酚异构体偶极矩计算得到：对位５．６７Ｄ，间位５．１０Ｄ，邻位３．７１Ｄ。因此，其极性强弱顺序与上一致。至于其他种类的芳香族衍生物的情况

A PRIME STUDY OF POLARITY AND ADSORPTION OF NITROBENZENE ISOMERIDE

The polarity and adsorption of isomeride of nitrobenzene and nitroaniline were studied and 24 cases of chromatographic identification were also studied.The results show:(1)their moving velocity of 22 cases are:the ortho-position is the first,the meta-position second,the third is para-position.(2)their adsorption are:the para-position is first,second is the meat-position and third is the ortho-position.(3)Their dipole movement were computed by using the principle of vector combination,They'are:the para-position is 5.67D,the meta-position is 5.10D and the ortho-position is 3.7iD Therefore,we conclude that the condition of other derivatives of aromatic compounds may be different,and should be considered respeCtively.