Synthesis and characterisation of bis-cyclen based dinuclear lanthanide complexes
作者:Thorfinnur Gunnlaugsson、Andrew J. Harte
DOI:10.1039/b514106k
日期:——
The design and synthesis of several bis-macrocyclic cyclen (1,4,7,10-tetraazacyclododecane) ligands and their corresponding lanthanum or europium complexes is described; these dinuclear lanthanide systems were made by connecting two macrocyclic cyclen moieties through a rigid, covalent, p-xylylenediamide bridge or a flexible aliphatic hexane bridge. These ligands were subsequently functionalised with six acetamide pendant arms (CONR1R2: R1 = R2 = H or CH3, or R1 = H, R2 = CH3). The corresponding lanthanide bis-complexes were then formed by reaction with La(III) and Eu(III) triflates, yielding overall cationic (+VI charged) complexes.
本文描述了几种双大环环丙烷(1,4,7,10-四氮杂环十二烷)配体及其相应的镧或铕配合物的设计和合成;这些双核稀土金属体系是通过刚性的共价对二甲苯二胺桥或灵活的脂肪族己烷桥连接两个大环环丙烷部分而成。随后,这些配体通过六个乙酰胺侧链(CONR1R2: R1 = R2 = H 或 CH3,或 R1 = H,R2 = CH3)进行了功能化。然后,通过与La(III)和Eu(III)三氟甲基磺酸盐的反应形成相应的稀土双配合物,最终得到带正电 (+VI 价) 的配合物。