用pH电位滴定法测定了含1,10-邻菲绕啉(Phen)和羧酸(CA)配体的三元混配物Pd(Phen)(CA)+体系在不同浓度乙醇-水溶液(30%～90%,V/V)中的稳定常数,比较和讨论了各种配合物之间的稳定性差异,并计算了三元混配物Pd(Phen)(PCA)+(PCA为2-苯乙酸和3-苯丙酸)中堆积异构体的百分数.实验结果表明:三元混配物Pd(Phen)(PCA)+分子内的芳环堆积作用与溶液极性有关.溶液极性愈弱,分子内芳环堆积作用愈强,堆积异构体的百分数愈大,三元混配物愈稳定.
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