Staticfieldinducedmagneticrelaxationsindinuclearlanthanidecompoundsof[phen2Ln2（HCOO）4（HCOO）2-2x（NO3）2x]（1,Ln=Gdandx=0.52;2,Ln=Erandx=0.90;phen=1,10-phenanthroline）

被引：0

作者：

LIU Bin WANG BingWu WANG ZheMing GAO Song Beijing National Laboratory for Molecular Sciences

State Key Laboratory of Rare Earth Materials Chemistry and Applications

College of Chemistry and Molecular Engineering Peking University Beijing China ^{[100871
]}

机构：

来源：

中国科学:化学 | 2012年 / 42卷 / 06期

关键词：

lanthanide-formate; dinuclear complex; magnetic relaxation; structure;

D O I：

暂无

中图分类号：

O627.3 [第Ⅲ族元素有机化合物];

学科分类号：

摘要：

Two dinuclear lanthanide (Ln) complexes, formulated as [phen2Ln2(HCOO)4(HCOO)2-2x(NO3)2x] (1, Ln = Gd and x = 0.52; 2, Ln = Er and x = 0.90; phen = 1,10-phenanthroline), were synthesized and characterized. They are isostructural. The dinuclear molecule consists of two Ln3+ bridged by four formate groups and chelated by phen and formate/nitrate ligands, and the Ln3+ possesses a coordination environment of distorted tri-capped trigonal prism of LnO7N2. Both compounds behave as paramagnets between 2 and 300 K, but display two static field induced magnetic relaxation processes. One is slow and of spin-lattice type, and it results from the lifting of Kramer's degeneracy of the ground-states of both Gd3+ and Er3+, and the other is fast, and it might be spin-spin type.

引用

页码：891 / 892

页数：2