络合物稳定常数的计算

本文介绍了计算络合物稳定常数的八种方法,它们是:1.lgK₁=Az²/r+Bx_±+C.2.两相似金属离子与一系列配位体络合时,lgK₁间一的线性关系。3.两相似配位体与一系列金属离子络合时,lgK₁间的线性关系。4.一系列相似配位体与同一金属离子络合时,lgK₁与∑pK_a间的线性关系。5.一系列相近z²/r的金属离子与同一配位体络合时lgK₁与x_±间的线性关系。6.一系列相近x的金属离子与同一配位体络合时lgK₁与z²/r间的线性关系。7.金属离子随z²/r和x而变化的络合次序。8.∑pK_a较大的配位体与z²/r较大的金属离子匹配,电负性较小的配位体与电负性大的金属离子匹配。

ESTIMATION OF STABILITY CONSTANTS OF METAL COMPLEXES

Eight methods have been proposed for the estimation of stability constants of complexes as follows;1.lgK₁=Az²/r+Bx±+C.2.The linear relationship between lgK₁of two similar metal ions with a series of ligands.3.The linear relationship between lgK₁of two similar ligands with a series of metal ions.4.The linear relationship between lgK₁and ∑pK_afor complexes of one metal ion with a series of similar ligands.5.The linear relationship between lgK₁and x± for a series of metal ions with similar z²/r.6.The linear relationship between lgK₁and z²/r for a series of metal ions with similar x.7.The stability constants show the same "normal" variation as z²/r and x for the metal series.8.Ligands with larger∑pK_abind strongly to metals with larger z²/r and ligands with smaller x bind strongly to metals with larger xEight methods have been proposed for the estimation of stability constants of complexes as follows;