对苯二亚甲基桥联多齿配体的合成、表征及其配合物的稳定性研究  

SYNTHESIS OF POLYDENTATE LIGAND BRIDGED BY PHENYLENEDIMETHYLENE AND INVESTIGATION OF ITS COMPLEXES

作　　者：曹登科[1] 周志芬[1] 李苏琦[1] 林华宽[1] 朱守荣[1] 汪中明[1] 陈荣悌[1] 

机构地区：[1]南开大学化学系,天津300071

出　　处：《南开大学学报（自然科学版）》2000年第3期96-101,共6页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金!( 2 9671 0 2 0 )资助项目

摘　　要：合成了 1 ,4 -二 -2 -[N,N′-二 ( 2 -胺乙基 )丙二酰胺 ]对二甲苯 ,并进行了元素分析、红外光谱、核磁共振谱表征 .在 ( 2 5.0± 0 .1 )℃ ,I=0 .1 mol·dm- 3KNO3条件下 ,用 p H法测定了该配体的质子化常数、配体与 Cu( ) ,Zn( ) ,Ni( ) ,Co( )分别形成双核二元体系的稳定常数 ,以及 Cu( ) -L-α-氨基酸 / 5-取代邻菲罗啉双核三元体系的稳定常数 .实验结果表明 ,在 Cu( ) -L-α-氨基酸 / 5-取代邻菲罗啉双核三元体系中均存在良好的直线自由能关系 .将直线自由能关系拓宽到双核配合物领域 ,并从结构上讨论了所研究双核三元体系存在线性关系的原因 .Di 2 [N,N′ bis(2 aminoethyl)malondiamide] p xylene(L) has been synthesized and been characterized by elemental analysis, IR and 1HNMR. Protonation constant of the ligand L and its stability constants of binary complexes with metal ions(Cu(Ⅱ), Zn(Ⅱ), Co(Ⅱ)and Ni(Ⅱ)) and Cu(Ⅱ) L α Amino acid/5Rphen binuclear ternary complexes have been determined in aqueous solution by pH potential titration methon at (25.0±0.1)℃, I =0.1mol·L -1 KNO 3. The result showed that the Linear Free Energy Relationship (LFER) also exists in binuclear complexes. The internal cause has been discussed. Meanwhile, the influence of the substituents to the stability of ternary complexes has been discussed as well. The probable structures of the complexes were further discussed.$$$$

关 键 词：桥联多齿配体 双核配合物 对苯二亚甲基 合成 

分 类 号：O641.4[理学—物理化学]