平衡移动法测定β型钪-间硝基偶氮氯膦配合物真实组成和稳定常数的研究  

Mobile Equilibrium Method for Determination of the True Composition and Stability Constant of β-type Complex of Scandium with Chlorophosphonazo-mN

作　　者：周执明[1] 莫卫民[1] 刘文涵[1] 张青苗[1] 

机构地区：[1]浙江工业大学化工学院,杭州310014

出　　处：《分析科学学报》2004年第6期625-627,共3页Journal of Analytical Science

摘　　要：本文以适用于MmRn型配合物的平衡移动法公式测定α型和β型钪与间硝基偶氮氯膦配合物的组成和稳定常数。结果表明,α型为单核配合物Sc(CPAmN)2,β型为多核配合物Sc2(CPAmN)6,其表观稳定常数依次为lgβ ′n=11.7和lgβ ′n=38.6。The true compositions and stability constants of α|type and β-type complexes of scandium with chlorophosphonazo-mN are determined by mobile equilibrium method. The results show that α-type complex is mononuclear (Sc(CPAmN)_2) and β-type complex is polynuclear (Sc_(2)(CPAmN)_6) and their apparent stability constants are lgβ′_(n)=11.7 and lgβ′_(n)=38.6, respectively.

关 键 词：钪 间硝基偶氮氯膦 β型配合物 真实组成 稳定常数 平衡移动法 

分 类 号：O657.3[理学—分析化学] O614.321[理学—化学]