钪－稀土－对乙酰基偶氮氯膦体系共显色效应的研究  

Studies on the Cocolouration Effect in Scandium-Rare Earth p-acetylchlorophosphonazo System

作　　者：刘双成[1] 徐钟隽[1] 潘教麦[1] 

机构地区：[1]华东师范大学化学系

出　　处：《高等学校化学学报》1996年第7期1056-1058,共3页Chemical Journal of Chinese Universities

摘　　要：钪－稀土－对乙酰基偶氮氯膦体系共显色效应的研究刘双成，徐钟隽，潘教麦（华东师范大学化学系，上海，２０００６２）关键词钪，稀土，对乙酰基偶氮氯膦，共显色效应不则称偶氮氯膦试剂与稀土元素的β型显色反应，已被广泛用于稀土的测定［１，２］．但是当多种稀土或某...Scandium forms a β-type complex with p-acetylchlorophosphonazo(CPApA)in acidic medium.In the presence of cerium,a cocolouration effect was observed due to the formation of a mixed polynuclei complex[Sc-Ce-(CPApA)2].In this paper,the transformation reaction between α-complex of scandium-CPApA and β-complex was studied kinetically and the mechanism of the formation of the ternary complex was discussed.Finally,the cocolouration effect of scandium on RE-CPApA system has also been discussed.

关 键 词：钪 稀土 共显色效应 CPAPA 

分 类 号：O614.321[理学—无机化学]