A metal-radical hetero-tri-spin SCM with methyl-pyrazole-nitronyl nitroxide bridges

被引：8

作者：

Huang, Xiaohui ^{[1
]}

Wang, Kang ^{[1
]}

Han, Jing ^{[1
]}

Xie, Junfang ^{[1
]}

Li, Licun ^{[1
]}

Sutter, Jean-Pascal ^{[2
]}

机构：

[1] Nankai Univ, Coll Chem, Key Lab Adv Energy Mat Chem, Dept Chem, Tianjin 300071, Peoples R China

[2] Univ Toulouse, CNRS, Lab Chim Coordinat, Toulouse, France

来源：

DALTON TRANSACTIONS | 2021年 / 50卷 / 34期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

MAGNETIC-PROPERTIES; EXCHANGE INTERACTION; ION LN; LANTHANIDE; COMPLEXES; LIGANDS; BEHAVIOR; MECHANISM; COMPOUND; STATE;

D O I：

10.1039/d1dt02006d

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The preparation, crystal structures, and magnetic properties of a family of hetero-tri-spin 1-D coordination polymers with the formula (Ln(hfac)(3)Cu(hfac)(2)(4-NIT-MePyz)(2)] (Ln = Gd, 1, Tb, 2, Dy, 3; hfac = hexafluoroacetylacetonate; 4-NIT-MePyz = 2-{4-(1-methyl)-pyrazolyl)-4,4,55-tetramethylimidazoline-1-oxyl-3-oxide) are reported. In these complexes, the 4-NIT-MePyz radical acts as a linker to bridge the Cu-II and Ln(III) ions through its pyrazole and aminoxyl groups to form a chain structure. Magnetic properties typical of spin-chains are observed for Dy and Tb derivatives but single-chain magnet (SCM) behavior was evidenced only for the Tb compound which is characterized by an energy gap for demagnetization Delta(tau)/k(B) of 31 K.

引用

页码：11992 / 11998

页数：7

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