酚钾-1,3,5-三硝基苯电荷转移络合物的研究

The Study of Potassium Phenoxide-1,3,5-Trinitrobenzene Charge Transfer Complexes

酚钾电荷给予体C_6H_5OK、p-MeC_6H_4OK、p-EtC_6H_4OK、p-MeOC_6H_4OK 和p-ClC_6H_4OK(D)在溶剂DMSO 中与电荷接受体1,3,5—三硝基苯(A)作用,溶液在波长为440—442nm 有强的吸收,表明它们之间生成了有机电荷转移络合物.在[D]。》[A]。,溶液同时存在双行子和三分子的电荷转移络合物AD,AD_2.通过Scatchard 方程式,以微型电子计算机计算了四个电荷转移络合物的生成常数K_1、K_2和克分子消光系数∈_1、∈_2.实验结果表明,苯氧负离子具有强的给电荷性质,能与1,3,5—三硝基苯形成相当强的电荷转移络合物.

A remarkable absorbence at 440-442nm ascribed to the interaction of phenoxideor substituted phenoxide with 1,3,5-trintrobenzene show that the charge transfercomplexes have been formed.Through the Job plots and Scatchard plots by opti-cal measurements,it was indicated that when the concentration of donor wasmuch higher than that of acceptor,both of bimolecular complexes and termolec-ular complexes would be present.Four groups of comformation constants of thecharge transfer complexes and their molar absorptivities were measured by opt-ical method and calculated by microcomputer,and the logic of calculation wasgiven.