Octadentate Ligands Containing 2,3-Dihydroxybenzamide and 2,3-Dihydroxyterephthalamide Coordinating Subunits on a Tetrapodal Amine Backbone for Chelation of Actinides
作者:Jide Xu、Anne E. V. Gorden、Kenneth N. Raymond
DOI:10.1002/ejoc.200400080
日期:2004.8
ligand 3,4,3-LICAM(C) (2) is one of the most effective chelating agents for Pu IV that is not acutely toxic; however, at physiological pH, due to the weak acidity of the catechol hydroxy groups and the large proton dependence of the complexation reaction, only three of the four catecholate subunits are coordinated to Pu IV . To overcome this disadvantage, a new topological class of octadentate ligands
线性八齿配体 3,4,3-LICAM(C) (2) 是 Pu IV 最有效的螯合剂之一,无剧毒;然而,在生理 pH 值下,由于儿茶酚羟基的弱酸性和络合反应对质子的依赖性很大,四个儿茶酚酸亚基中只有三个与 Pu IV 配位。为了克服这一缺点,设计并合成了一种基于四足胺骨架和 2,3-二羟基对苯二甲酰胺 (3) (TAM) 结合单元的新拓扑类八齿配体。酰胺取代基提供了一个手柄,通过它可以很容易地修改配体的功能,