配合物稳定性与酸碱强度之间的直线自由能关系——ⅪⅤ.N-(取代苯基)亚氨基二乙酸与铜(Ⅱ)、镍(Ⅱ)、锌(Ⅱ)钴(Ⅱ)二元配合物的稳定性研究  

LINEAR FREE ENERGY RELATIONSHIPS BETWEEN STABILITY OF COMPLEX COMPOUNDS AND BASICITY OF LIGAND XIV. M(II)-N-SUBSTITUTEDPHENYL IMINODIACETIC ACID BINARY SYSTEM

作　　者：刘树祥[1] 林华宽[2] 刘在均[2] 王光 陈荣悌[2] 

机构地区：[1]东曲阜师范大学化学系。 [2]南开大学化学系,天津300071

出　　处：《无机化学学报》1992年第1期78-81,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金

摘　　要：直线自由能关系是化学中的一个普遍规律,为了进一步揭示直线自由能关系在配位化合物中的普遍性,我们合成了N-(对位(和邻位)取代苯基)亚氨基二乙酸p-RPhIDA和o-RPhIDA,R=Cl,H,CH_3,CH_3O),并在25.0±0.1℃,0.1mol。dm^(-3)KNO_3存在下应用pH法测定了它们的离解常数pK_1、pK_2,研究了其与铜(Ⅱ)及p-RPhIDA与镍(Ⅱ)、钴(Ⅱ)、锌(Ⅱ)等生成二元配合物的稳定性。The dissociation constants of N-(para-substituted phenyl ) iminodiacetic acid (p-RPhID A, R = Cl, H, CH3, CH3O) and N-(ortho-substituted phenyl ) iminodiacetic acid (o- RPhlDA) and the formation constants of binary complex compounds of Cu(II)-o-RPhIDA, Cu(II)-p-RPhIDA, Co(II)-p-RPhIDA, Ni(II)-p-RPhIDA and Zn(II) - p-RPhIDA were determined by pH method in the presence 0.1mol ·dm-3 KNO3 at 25℃ . It has been found that linear free energy relationships not only exist between stability of these binary complex compounds and base strength of ligand, but also exist between logB and The deviation of Cu(II)-o-CH3PhIDA from linearity may be ascribed to steric effect of methyl group at ortho position.

关 键 词：铜 镍 锌 钴 配合物 稳定性 

分 类 号：O614.121[理学—无机化学]