云南师范大学学报（自然科学版）2011，Vol.31Issue(1)：68-70,3.
一种多核配合物稳定常数的简便测定方法
A Simple Method for Determining Stability Constants of Poly-nuclear Complexes
摘要
Abstract
A simple method for determining stability constants of poly-nuclear complexes was presented in this paper.The method is based on addition of metal ion by titration at constant free ligand concentration.It includes the following several steps: firstly, draw the first-order partial differential diagram of logarithmic value of total concentration of metal ion in solution, lg CM against negative value of free metal ion concentration,pM; secondly, find the pM s and corresponding lgCM s at the pM points when their slopes equal to the coordination numbers of metal ion in poly-nuclear complex, MaAb; thirdly, obtain the initial values of cumulative stability constants of M.A.from the equation: lg βMAb = lg CM + apMr= _a + bpA - lg a; fourthly, put these initial values into equation and obtain new lg/3MaAb∶lg βMaAb = lg CM + apMr= _a + bpA -lga+lg =ΦMaAb Continue to iterate until the two successive results are equal and they are the final results.The imaginary data of two poly-nuclear complexes were used for calculation, and their results agree with pre-set values.关键词
多核配合物/稳定常数/偏微分/滴定分类
化学化工引用本文复制引用
李可群..一种多核配合物稳定常数的简便测定方法[J].云南师范大学学报（自然科学版）,2011,31(1):68-70,3.
