X-Ray Structural Studies of Small-Bite Ligands on Large Cations – Lanthanide(III) Ions and Dimethylphosphate
作者:Eric J. Chan、Jack M. Harrowfield、Brian W. Skelton、Allan H. White
DOI:10.1071/ch19506
日期:——
polymeric and commonly dimorphic, while the stoichiometrically more variable mixed dmp/tfa complexes have structures closely related to one phase of the Ln(dmp)3 family, and the presence of picrate and aza-aromatic ligands enables the isolation of Y and Lu derivatives containing binuclear species. In all, the dmp– ligands adopt exclusively the κ1O;κ1O′ bridging mode, the overall results indicating
在前两种情况下,镧系元素氯化物或三氟乙酸盐(tfa)或苦味酸盐与单独的磷酸三甲酯反应,或在第三种情况下与磷酸三甲酯加1,10-菲咯啉或3,2'; 6',2''-叔吡啶反应,导致形成含有磷酸二甲酯(dmp –)的结晶产物。这些材料的单晶X射线结构表征表明,用氯反应物和较轻的镧系元素获得的化学计量简单的Ln(dmp)3物种是聚合的,并且通常是双态的,而化学计量可变性更高的dmp / tfa混合复合物的结构密切相关到Ln(dmp)3的一相家族和苦味酸盐和氮杂芳香族配体的存在使得能够分离出含有双核物种的Y和Lu衍生物。总之,DMP -配体采用专门的κ 1 Ò ;κ 1 O'桥接模式,总体结果表明,这应该适用于完整的镧系。