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...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.展开更多
：A series of new rare earth complexes LnL(NO3)2· 2H2O(Ln=La,Pr,Nd,Sm,Eu,Gd,Dy,Yb;L=1,2-diaza-3,4∶ 9,10-dibenzo-5,8-dioxyacyclopentadecane-N-acetic ion) were prepared. The complexes were characterized by element...：A series of new rare earth complexes LnL(NO3)2· 2H2O(Ln=La,Pr,Nd,Sm,Eu,Gd,Dy,Yb;L=1,2-diaza-3,4∶ 9,10-dibenzo-5,8-dioxyacyclopentadecane-N-acetic ion) were prepared. The complexes were characterized by elemental analysis, ICP method, IR spectra, 1H NMR and Molar conductance. It was found that the ether oxygen, carboxy oxygen and nitrogen atoms of the ligand are coordinated to the metal ion, as well as a free nitrate and coordianted nitrate ion in the complex.展开更多
The title ternary complex was synthesized in aqueous solution,and the crystal structure was determined by single crystal X-ray diffraction analysis.The crystal belongs to triclinic system with space group of Pī and t...The title ternary complex was synthesized in aqueous solution,and the crystal structure was determined by single crystal X-ray diffraction analysis.The crystal belongs to triclinic system with space group of Pī and the lattice parameters:a=12.969（2）?,b=14.508（2）?,c=14.706（3）?,α=98.99（1）°,β=111.07（1）°,γ=114.50（1）°,V=2192.5（8）?3,Z=2,Dc=1.668g/cm3.The title complex is a mononuclear molecule.The central metal ion Tb3+ is coordinated to four nitrogen atoms from two chelating 1,10-phenanthroline,to two oxygen atoms from monodentate carboxyl and to two oxygen atoms from coordinated water molecules.The coordination number is eight and the coordination geometry can be discribed as a distorted square antiprism.展开更多
文摘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.
文摘：A series of new rare earth complexes LnL(NO3)2· 2H2O(Ln=La,Pr,Nd,Sm,Eu,Gd,Dy,Yb;L=1,2-diaza-3,4∶ 9,10-dibenzo-5,8-dioxyacyclopentadecane-N-acetic ion) were prepared. The complexes were characterized by elemental analysis, ICP method, IR spectra, 1H NMR and Molar conductance. It was found that the ether oxygen, carboxy oxygen and nitrogen atoms of the ligand are coordinated to the metal ion, as well as a free nitrate and coordianted nitrate ion in the complex.
文摘The title ternary complex was synthesized in aqueous solution,and the crystal structure was determined by single crystal X-ray diffraction analysis.The crystal belongs to triclinic system with space group of Pī and the lattice parameters:a=12.969（2）?,b=14.508（2）?,c=14.706（3）?,α=98.99（1）°,β=111.07（1）°,γ=114.50（1）°,V=2192.5（8）?3,Z=2,Dc=1.668g/cm3.The title complex is a mononuclear molecule.The central metal ion Tb3+ is coordinated to four nitrogen atoms from two chelating 1,10-phenanthroline,to two oxygen atoms from monodentate carboxyl and to two oxygen atoms from coordinated water molecules.The coordination number is eight and the coordination geometry can be discribed as a distorted square antiprism.
