Predictable self-assembled [2 x 2] Ln(III)4 square grids (Ln = Dy,Tb)-SMM behaviour in a new lanthanide cluster motif

被引：151
|
作者：
Anwar, Muhammad Usman [1 ]
Thompson, Laurence Kenneth [1 ]
Dawe, Louise Nicole [1 ]
Habib, Fatemah [2 ]
Murugesu, Muralee [2 ]
机构：
[1] Mem Univ Newfoundland, Dept Chem, St John, NF A1B 3X7, Canada
[2] Univ Ottawa, Dept Chem, Ottawa, ON K1N 6N5, Canada
来源：
CHEMICAL COMMUNICATIONS | 2012年 / 48卷 / 38期
基金：
加拿大自然科学与工程研究理事会;
关键词：
SINGLE-MOLECULE-MAGNET; MAGNETOSTRUCTURAL CORRELATIONS; AZIDE BRIDGE; COMPLEXES; EXCHANGE; LIGANDS;
D O I：
10.1039/c2cc17546k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The ditopic carbohydrazone ligand (L1) produces the square, self-assembled [2 x 2] grids [Dy-4(L1)(4)(OH)(4)]Cl-2 (1) and [Ln(4)(L1)(4)(mu(4)-O)(mu(2)-1,1-N-3)(4)] (Ln = Dy (2), Tb (3)), with 2 exhibiting SMM behaviour. Two relaxation processes occur with U-eff = 51 K, 91 K in the absence of an external field, and one with U-eff = 270 K in the presence of a 1600 Oe optimum field.
引用
收藏
页码：4576 / 4578
页数：3
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