Charge-transfer Complexes, Gas-liquid Chromatographic and Photochemical Characteristics, and Solvent Adducts of Polyphenylenes and Related Linear Polyphenylsls
作者:Yasuhiro Fujioka
DOI:10.1246/bcsj.58.481
日期:1985.2
The absorption spectra of the charge-transfer (CT) complexes formed by two acceptors (tetracyanoethylene and 2,3-dichloro-5,6-dicyano-p-benzoquinone) with thirteen macrocyclic polyphenylenes and with thirty-eight linear polyphenyls were measured in dichloromethane. A linear relationship existing between the first transitions of the CT-complexes and those of the uncomplexed donor hydrocarbons made it possible to predict the CT-bands of new polyphenylenes and polyphenyls. By the gas-liquid chromatography using a glass capillary column, forty-nine polyphenyls and polyphenylenes, containing a large number of isomers, were successfully analyzed. The relationship between the retention times and the structure of linear polyphenyls was expressed by means of a simple empirical equation, and the equation was also applicable to the polyphenylenes by adding a correction factor. These equations are extremely useful for the estimation of the retention time and elution order and the structure of unknown polyphenyls and polyphenylenes. The reductive irradiation of m,m,o,p,o-pentaphenylene provided the bridged annulene compound. For six polyphenylenes and the related compounds, the criteria for the occurrence of the intramolecular photocoupling reaction were discussed. Among the examined polyphenylenes, m,o,o,m,o,o-hexaphenylene and o,p,p,o,p,p,o,p,p-nonaphenylene formed the adducts with several solvents.
在二氯甲烷中测量了由两个受体(四氰乙烯和2,3-二氯-5,6-二氰基-对苯醌)与13种大环聚苯和38种线型聚苯形成的电荷转移(CT)复合物的吸收光谱。由于CT复合物的第一级跃迁与未复合的供体烃的第一级跃迁之间存在线性关系,因此可以预测新聚苯和聚苯的CT带。通过玻璃毛细管柱的气液色谱法,成功分析了49种含有大量异构体的聚苯和聚苯。通过简单的经验方程式表示了线型聚苯的保留时间和结构之间的关系,通过添加校正因子,该方程式也适用于聚苯。这些方程式对于未知聚苯和聚苯的保留时间、洗脱顺序和结构的估计非常有用。m,m,o,p,o-五苯的还原照射提供了桥联环烯化合物。对于6种聚苯和相关化合物,讨论了分子内光偶联反应发生的标准。在所研究的聚苯中,m,o,o,m,o,o-六苯和o,p,p,o,p,p,o,p,p-九苯与几种溶剂形成了加合物。