Magnetic Slow Relaxation in Cyclic TbIII-Nitronyl Nitroxide Radical Complexes

被引：74

作者：

Tian, Haixia ^{[1
]}

Liu, Ruina ^{[1
]}

Wang, Xiaoling ^{[1
]}

Yang, Peipei ^{[1
]}

Li, Zuoxi ^{[1
]}

Li, Licun ^{[1
]}

Liao, Daizheng ^{[1
]}

机构：

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

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2009年 / 29-30期

基金：

中国国家自然科学基金;

关键词：

Radicals; Nitronyl nitroxide; Lanthanides; Terbium; Magnetic properties; Single molecule magnet; SINGLE-MOLECULE MAGNETS; HIGH-SPIN MOLECULES; ANISOTROPY; MANGANESE; DYNAMICS; BEHAVIOR; CRYSTAL; DIMER; IONS;

D O I：

10.1002/ejic.200900584

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two nitronyl nitroxide radical-Tb-III complexes, [Tb(hfac)(3)-(NIT-3Py)](2) (1) and [Tb(hfac)(3)(NIT-4Py)](2) (2) [hfac = hexafluoroacetylacetonate; NIT-3Py = 2-(3'-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide; NIT-4Py = 2-(4'-pyridyl)-4,4,5,5-tetramethylimidazoline-1-oxyl. 3-oxide] have been synthesized Both complexes possess cyclic duller structure in which each pyridyl-substituted radical links two different metal inns through the oxygen of nitroxide group and the pyridine nitrogen DC magnetic studies show the Tb-III ion interacts ferromagnetically with the directly bonding nitronyl nitroxide Complex 1 exhibits magnetic slow relaxation resembling SMM behavior, while there are no clearly the frequency-dependent out-of-phase signals for complex 2 ((C) Wiley-VCH Verlag GmbH & Co KGaA, 69451 Weinheim, Germany, 2009)

引用

页码：4498 / 4502

页数：5

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