平衡移动法测定M_mR_n型配合物组成和稳定常数的研究  

Studies on Mobile Equilibrium Method for Determining the Composition and Stability Constant of Coordination Compounds of the Form M m R n

作　　者：周执明[1] 毛东森[1] 叶存孝[1] 

机构地区：[1]浙江工业大学化工学院

出　　处：《中国稀土学报》1997年第2期165-168,共4页Journal of the Chinese Society of Rare Earths

摘　　要：根据平衡移动原理推导出一种能判别单核或多核配合物并直接测定ＭｍＲｎ型配合物组成和稳定常数的平衡移动法公式ｌｇ（Ａｉ／（Ａｍａｘ－Ａｉ）ｍ）＝ｎｌｇｃ′Ｒ＋ｌｇ（ｍ·β·ˉ（ｃＭ／Ａｍａｘ）（ｍ－１）。用Ｓｃ３＋－ＣＰＡⅢ和Ｆｅ３＋ＣＡＳ两个配合反应体系加以验证，结果令人满意。A new method is proposed for determining the composition and stability constant of coordination compounds of the form M m R n ; it can be used to differentiate mono and polynuclear coordination compounds. The equation derived is lg( A i/(A max - A i) m )= n lg c ′ R+lg( m·β·(c M/ A max ) ( m-1 ) ). The method is based on Bent French limited logarithm method. The demonstration of the proposed method has yielded correct results for Sc 3+ ChlorophosphonazoⅢ system and Fe 3+ Chromazurol S system.

关 键 词：平衡移动法 稳定常数 多核络合物 络合物 MmRn型 

分 类 号：O641.4[理学—物理化学]