含羧甲基侧臂的二(四)氮杂冠醚配体及稀土配合物的合成与表征

SYNTHESES AND CHARACTERIZATION OF NEW LIGANDS OF DIAZACROWN ETHER AND TETRAAZACROWN ETHER WITH CARBOXYBENZYL PENDANTS AND THEIR RARE EARTH COMPLEXES

合成了 2个新型的含苯甲酸侧臂的二氮杂 18 冠 6衍生配体L1和四氮杂 18 冠 6衍生配体L2 ,制备了L1与稀土苦味酸盐和L2与稀土硝酸盐的配合物 .通过核磁共振谱、元素分析、红外和紫外光谱 ,对配体和配合物进行了表征 .实验结果表明 ,配体L1与稀土离子形成了 1∶1型配合物 ,而L2与稀土离子形成了双核配合物 .

Two new derivatives of diazacrown ether and tetraazacrown ether with o-toluic acid pendants (L1 and L2) are synthesized. Their complexes with rare earth picrates and nitrates are prepared. Both the ligands and their complexes are characterized by NMR, elemental analysis, IR and UV-visible spectroscopies. The results show that L1 and rare earth ions are constitute 1∶1 complexes, while L2 and rare earth ions are constitute dinuclear complexex.