Four New Lanthanide-Nitronyl Nitroxide (LnIII=PrIII, SmIII, EuIII, TmIII) Complexes and a TbIII Complex Exhibiting Single-Molecule Magnet Behavior

被引：141

作者：

Xu, Jin-Xia ^{[1
]}

Ma, Yue ^{[1
]}

Liao, Dai-zheng ^{[1
]}

Xu, Gong-Feng ^{[2
]}

Tang, Jinkui ^{[2
]}

Wang, Chao ^{[1
]}

Zhou, Na ^{[1
]}

Yan, Shi-Ping ^{[1
]}

Cheng, Peng ^{[1
]}

Li, Li-Cun ^{[1
]}

机构：

[1] Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China

来源：

INORGANIC CHEMISTRY | 2009年 / 48卷 / 18期

关键词：

COORDINATION POLYMERS; CRYSTAL-STRUCTURE; ORGANIC FRAMEWORKS; FREE-RADICALS; MAGNETIZATION; LN; DYNAMICS; LIGAND; SERIES; GD;

D O I：

10.1021/ic901169p

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Five new complexes based on rare-earth-radical [Ln(hfac)(3)(NIT-5-Br-3py)](2) (Ln=Pr (1), Sm (2), Eu (3), Tb (4), Tm (5); hfac = hexafluoroacetylacetonate; NIT-5-Br-3py = 2-(4,4,5,5-tetramethyl-3-oxylimidazoline-1-oxide)-5-bromo-3-pyridine) have been synthesized and characterized by X-ray crystal diffraction. The single-crystal structures show that these complexes have similar structures, in which a NIT-5-Br-3py molecule acts as a bridging ligand linking two Ln(III) ions through the oxygen atom of the N-O group and nitrogen atom from the pyridine ring to form a four-spin system. Both static and dynamic magnetic properties were measured for complex 4, which exhibits single-molecule magnetism behavior.

引用

页码：8890 / 8896

页数：7

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