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本文根据离子极化原理,探讨了络合物稳定性的规律,得到了计算络合物稳定常数的公式: log K_r=AZ~2/r+BX_±+C,此处,Z是阳离子电荷,r是阳离子半径,X_±=(X_-+X_+)/(X_--X_(?)),称为电负性和差比。A、B、C在确定配位体之后是常教,其值可根据已知的log K_1、Z~2/r及X_±值用荔枝Ⅱ微电脑算出。在此基础上,本文还讨论了影响络合物稳定性的因素,并例举了一些在分析上应用的实例。
Based on the principle of ion polarization, the stability of the complex was discussed. The formula for calculating the stability constant of complex was obtained: log K_r = AZ ~ 2 / r + BX_ ± + C, where Z is the cationic charge, r is the cation radius, X_ ± = (X _- + X _ +) / (X _ - X_ (?)), called the electronegativity and the difference. A, B, C are common after determining the ligand, and their values can be calculated from the litchi II microcomputers based on the known log K_1, Z_2 / r and X_ ± values. On this basis, this article also discussed the factors that affect the stability of the complex, and gives some examples of the application in the analysis.