钪—偶氮氯膦Ⅲ—铜—邻菲罗啉混合多核配合物显色反应研究

Studies on the Color Reaction of Mixed Polynuclear Complex of-Sc-CPA Ⅲ-Cu-Phen

本文研究了钪—偶氮氯膦Ⅲ—铜—邻菲罗啉配合物的形成条件。在pH3.6醋酸钠—盐酸介质中配合物的最大吸收峰在606nm处,摩尔吸光系数ε_(606)=7.02×10^(-4)L·mol^(-1)·cm^(-1)。配合物各组分摩尔比Sc∶R ∶Cu∶Phen=1∶1∶1∶3。分子式为[ScOH·H_4R][Cu(Phen)_3]。应用于以铜基合金合成试样中钪的直接测定,结果较好。

The Forming conditions of the complex of Sc-CPA Ⅲ-Cu-Phen has been researched. The complex has an absorption maxium at 606nm and its molar absorptivity is 7.02×10~4L· tool^(-1)·cm^(-1). The molar ratio in the complex Sc, CPA Ⅲ, Cu, Phen=1:1:1:3. The color reaction has been applied to the direct determination of Scandium in Copper base synthetic sample with satisfactory results.