某些铅(Ⅱ)、镉(Ⅱ)的三元配合物中的直线自由能关系  

Linear Free Energy Relationship in Some Ternary Complexes of Pb(Ⅱ) and Cd(Ⅱ)

作　　者：刘祁涛[1] 高恩君[1] 李涵[2] 

机构地区：[1]辽宁大学化学系 [2]长春应用化学研究所

出　　处：《辽宁大学学报（自然科学版）》1992年第3期1-5,共5页Journal of Liaoning University：Natural Sciences Edition

摘　　要：本文报导在铅(Ⅱ)和镉(Ⅱ)的三元配合物MLA(其中L为2,2′—联吡啶(bipy)或邻菲咯啉(phen),A为丁二酸根(suc^(2-))、邻苯二甲酸根(pht^(2-))和4—硝基邻苯二甲酸根(npht^(2-)))中,三元配合物的稳定性与配体A的碱性之间的直线自由能关系,并与相应的二元配合物MA_2进行了比较,对二者的差别和某些造成复杂化的因素进行了讨论。In this paper, Linear free energy relationship between stability of metal complexes and basicity of ligands in some ternary complexes MLA was reported where M=Pb(Ⅱ) or Cd(Ⅱ); L=2,2'-bipyridyl or 1,10-phenanthroline;A=succinate, phthalate and 4-nitrophthalate. The linear relation between the stability of ternary complexes, logK_(MLA)~ML, or log/β_(MLA)~M and the basicity of ligands A, pK_(a2), are of fine regularity. The results were compared with binary complexes MA_2. The obvious differences between them were found. Accounting for the above mentioned relationship and other complicated factors were also briefly discussed.

关 键 词：铅 镉 三元配合物 直线自由能 

分 类 号：O641.4[理学—物理化学]