论文部分内容阅读
冠醚稀土固体配合物的研究已有些报道,我们亦曾合成了苯并-15-冠-5的衍生物的稀土盐固体配合物,而关于冠醚对于稀土离子在溶液中的配合反应的研究尚较少.本工作采用离子选择性电极测定冠醚配合物稳定常数的方法,研究了苯并-15-冠_5(L_1)及4’-硝基苯并-15-冠-5(L_2)在甲醇溶液中对十种稀土离子的配合反应,按形成1∶1配合物计算了它们的稳定常数,并就与稀土离子半径相近的钙离子、钠离子在相同的实验条件下的竞争配合能力进行了讨论.
Studies on rare earth solid complexes of crown ethers have been reported. We have also synthesized rare earth salt complexes of benzo-15-crown-5 derivatives. However, the coordination reactions of crown ethers with rare earth ions in solution (L_1) and 4’-nitrobenzo-15-crown-5 (L_2) were studied by using ion-selective electrode to determine the stability constants of crown ether complex ) In methanol solution of ten kinds of rare earth ions with the reaction, according to the formation of 1: 1 complexes calculated their stability constants, and similar to the rare earth ions of calcium ions, sodium ions competitive under the same experimental conditions Ability to discuss.