N,N'-二乙酸取代含噻吩环氮杂冠醚配体及其稀土配合物的合成与表征

Synthesis and Characterization of N,N′-Diacetic Acid Substituted Azacrown Ether Containing Thiophene Ring and its Rare-Earth Complexes

A new N,N′ diacetic acid substituted azacrown ether containing thiophere ring ligand(H2L) has been synthesized by using salicylaldehyde, diamine, thiophene and bromoacetic acid as starting materials. With this ligand, its lanthanide complexes ·nH2O(M=La,Ce,Pr,Nd,Sm,Eu,Dy,Er,Yb;n=2 or 3) are prepared. These compounds are characterized by elemental analysis, IR, 1H NMR, MS and conductivity measurements. The results show that ether oxygen, carboxy oxygen, nitrogen atoms and nitrate ion are coordinated to the metal ion.

A new N, N'-diacetic acid substituted azacrown ether containing thiophere ring ligand(H2L) has been synthesized by using salicylaldehyde, diamine, thiophene and bromoacetic acid as starting materials. With this ligand, its lanthanide complexes [ML(NO3)] . nH(2)O (M = La, Ce, Pr, Nd, Sm, Eu, Dy, Er, Yb; n = 2 or 3) are prepared. These compounds are characterized by elemental analysis, IR, H-1 NMR, MS and conductivity measurements. The results show that ether oxygen,carboxy oxygen, nitrogen atoms and nitrate ion are coordinated to the metal ion.