席夫碱类三明治型铽/镝金属配合物的合成、表征及磁性（英文）

Sandwich-Type Tb and Dy Complexes with Schiff-Base Ligand: Syntheses, Crystal Structures and Magnetic Properties

以N,N′-二(4-甲氧基水杨基)邻苯二胺(H2L)为配体合成了2个新的稀土配合物[M_2L_3(H_2O)](M=Tb (1),Dy (2)),并对它们进行了红外分析、元素分析和单晶结构分析。单晶衍射结果表明,配合物1和2均为三明治型双核配合物。此外还研究了配合物1和2的磁学性质,结果表明配合物1和2都表现出反铁磁性作用和场诱导效应引起的慢弛豫行为。配合物2的有效能垒和驰豫时间分别为35.45 cm-1和2.7×10^(-10) s。

Two new sandwich-type di-lanthanide complexes[M2L3(H2O)](M=Tb(1),Dy(2),H2L=N,N′-bis(4-methyloxysalicylidene)benzene-1,2-diamine)were synthesized by treating the Schiff-base ligand with M(acac)3·6H2O(M=Tb,Dy)and characterized by elemental analysis,IR spectra and X-ray single crystal diffraction.X-ray single crystal diffraction analysis reveals that 1 and 2 have a similar new triple-deck dinuclear sandwich structure.The magnetic measurements of complexes 1 and 2 indicated that 1 and 2 exhibit the antiferromagnetic interactions between lanthanide ions,and field-induced slow magnetic relaxation.The deduced effective energy barrier(Ueff)and relaxation time(τ0)are 35.45 cm-1 and 2.7×10^-10 s for 2.CCDC:1818315 1;1818316,2.