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在以前的几篇报告中,我们报导了三联苯、四联苯以及二种多苯基苯负离子基的波谱,并对联苯系负离子基的结构和电子自旋密度的关系作了若干探讨。据最近国外报导的三联苯负离子基的情况来看,波谱线形与我们报导的基本上相同,但他们没有着重指出联苯环的空间排列非平面性,以及未偶电子的离域范围。这二点是联苯系和稠苯系所不同的特点。为了获得联苯和稠苯结合物的规律,我们制备了下列五种稠环联苯化物:1-苯基萘,1,l’-二联萘,1,2,3,4-四苯基萘,9-苯基蒽及9,10-二苯基菲,并用金属钾还原为相应的负离子基,兹将测试结果报导于后。
In previous reports, we reported the spectra of terphenyls, terphenyls and two kinds of polyphenylbenzene anions, and discussed the relationship between the structure and electron spin density of biphenyls. According to the recent reports of terphenyl anion in foreign countries, the spectral lines are basically the same as those we reported, but they did not point out the nonplanar arrangement of the biphenyl rings in space and the delocalization range of non-dipole electrons. These two points are the different characteristics of biphenyls and thick benzene systems. In order to obtain the regularity of biphenyl and condensed benzene conjugates, we prepared the following five kinds of fused ring biphenyl compounds: 1-phenylnaphthalene, 1,1’-binaphthyl, 1,2,3,4-tetraphenyl Naphthalene, 9-phenylanthracene and 9,10-diphenylphenanthrene and metal potassium reduction to the corresponding anion base, the test results will be reported later.