氮-[双(2-吡啶)甲基]吡啶-2-甲酰胺金属配合物的热力学稳定性研究  

Thermodynamic Stability Studies on the N-[Bis(2-pyridyl)methyl] pyridine-2-carboxamide Metal Complexes

作　　者：高东昭[1] 郭延河[1] 朱守荣[1] 林华宽[1] 许新合[1] 

机构地区：[1]南开大学化学系,天津300071

出　　处：《高等学校化学学报》2004年第3期493-496,391,共5页Chemical Journal of Chinese Universities

基　　金：国家教育部外事司留 ( 0 1) 3 45项目资助

摘　　要：利用简单步骤合成了酰胺类配体氮 -[双 ( 2 -吡啶 )甲基 ]吡啶 -2 -甲酰胺 ( L) ,在 2 5℃ ,I=0 .1 mol/ LKNO3的 3 0 %乙醇 -水溶液中用 p H滴定法测定了其与不同金属离子组成的二元和三元配合物的稳定常数 ,结合单晶结构讨论了物种的可能构型 ,并比较了配体与 Cu( )和 Fe( )形成配合物的热力学稳定性差异 。N [Bis(2 pyridyl)methyl]pyridine 2 carboxamide was synthesized and characterized. At 25 ℃, I =0.1 mol/L KNO 3, the stability constants of the binary and ternary systems formed by the ligand with metal ions in ethanol aqueous solution were studied by pH titrations and the appropriate structures with respect to the titration species were proposed according to the literature and the obtained data. Furthermore we also investigated the thermodynamic stability difference between the copper and iron comp...

关 键 词：酰胺 配合物 热力学稳定性 线性自由能关系 

分 类 号：O641.4[理学—物理化学]