铝－铬天青S－铜－邻菲啰啉混合多核配合物显色反应的研究

STUDIES ON THE COLOR REACTION OF MIXED POLYNUCLEAR COMPLEX OF AL-CHROME-AZUROL-S-CU-O-PHENANTHROLINE

在弱酸性介质中，铝与铬天青Ｓ所形成的阴离子配合物，可以与铜－邻菲啰啉配阳离子通过静电引力形成缔合型的混合多核配合物，本文研究了铝－铬天青Ｓ－铜－邻菲啰啉配合物的形成条件及有关机理，配合物的最大吸收峰位于６１５ｎｍ处，相应的摩尔吸光系数ε６１５＝２．３×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，配合物中各组分的摩尔比为：Ａｌ∶ＣＡＳ∶Ｃｕ∶Ｐｈｅｎ＝２∶６＝３∶６。

In a weak acid media, the anion complex which was formed with Al and Chrome-Azurol-S reacted with the cation complex which was formed with Cu and O-Phenanthroline a mixed polynuclear complex formed.This paper reported the forming condition and mechinism of the mixed polynuclear complex of Al-Chrome-Azurol-S-Cu-O-Phenthroline.The molar absorptivity of the mixed polynuclear complex was found to be 2.3 × 104 L·mol-1·cm-1 at 630 nm and its composition was Al∶CAS∶Cu∶Phen=2∶6∶3∶6.