新型带臂式大环双核金属配合物的合成  

Synthesis of New Dinuclear Complexes of a Macrocyclic Ligand with Multi-ligating Pendant-arms

作　　者：罗元香[1] 陆路德[1] 韩巧凤[1] 钱明[1] 杨绪杰[1] 汪信[1] 

机构地区：[1]南京理工大学化工学院,南京210094

出　　处：《南京理工大学学报》2002年第6期649-652,共4页Journal of Nanjing University of Science and Technology

摘　　要：用 2 ,6 -二甲醛 - 4-氯酚钠盐与三 ( 2 -氨基乙基 )胺和 2 -乙酰基吡啶 1∶1席夫碱缩合的还原产物进行 2 + 2席夫碱模板缩合 ,再与过渡金属高氯酸盐发生置换 ,合成了一系列新型的带有螯合功能臂的大环双核金属配合物 :[M2 L](ClO4) 2(M代表Mn2 + ,Cd2 + ,Zn2 + ,Cu2 + )。用红外光谱和元素分析对其进行了表征。结果表明 ,合成的产物均为预期的大环双核金属配合物。在这些配合物中 ,两臂均是从大环的同一侧与金属离子进行螯合 ,但金属离子的配位环境不同。已证实金属离子Mn2 + ,一个位于扭曲的八面体中 (六配位 ) ,另一个位于戴帽的扭曲八面体中 (七配位 )。A series of new dinuclear macrocyclic complexes have been synthesized by Schiff base condensation between sodium 2,6-diformyl-4-chlorphenolate with the reduced 1∶1 Schiff base of tris(2-aminoethyl) amine and 2-acetylpyridine in the presence of M( ClO 4 ) 2·6 H 2O (M= Mn 2+ , Cd 2+ ,Zn 2+ ,Cu 2+ ).These complexes have been characterized by elemental analyses and infrared spectra. The results show that the expected complexes are obtained. Both arms of these complexes are on the same side of the macrocycle. The macrocyclic ligand offered different coordination environments. For the Mn 2+ complex, one Mn 2+ is located in a geometry of a distorted octahedron (six coordinated), another Mn 2+ is located in a geometry of a capped distorted octahedron (seven coordinated). It is proposed that each Cd 2+ is located in a geometry of a distorted octahedron, while Zn 2+ and Cu 2+ are located in distorted octahedral or square pyramidal geometries.

关 键 词：带臂式大环双核金属配合物 合成 席夫碱 2-乙酰基吡啶 大环配合物 缩合反应 

分 类 号：O614[理学—无机化学] O641.4[理学—化学]