Simple Method and Materials to Target Co(ii)-Dy(iii) Multi-Nuclear Magnetic Compounds and Single Molecule Magnets (SMMs): Synthesis, Structure, and Magnetic Studies
Simple Method and Materials to Target Co(ii)-Dy(iii) Multi-Nuclear Magnetic Compounds and Single Molecule Magnets (SMMs): Synthesis, Structure, and Magnetic Studies
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DOI：
10.1071/ch12336
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发表时间：
2013-02
影响因子：
1.1
通讯作者：
Yan Zhu;F. Luo;Xue-feng Feng;Zhen-wei Liao;Yu-mei Song;Hai-xiao Huang;Xiao-zhao Tian;Gong-ming Sun;M. Luo
中科院分区：
文献类型：
--
作者：
Yan Zhu;F. Luo;Xue-feng Feng;Zhen-wei Liao;Yu-mei Song;Hai-xiao Huang;Xiao-zhao Tian;Gong-ming Sun;M. Luo
在这项工作中，基于混合的N-，O-供体配体，一系列的Co（ii）-Dy（iii）的化合物的合成和表征的单晶X-射线衍射和磁性研究。这些化合物包括Co_2（phen）_2Dy（PhCOO）_7（1）、Co_2（phen）_2Dy_2（PhCOO）_10（2）、Co（bpy）Dy（H_2O）（CH3-PhCOO）5（3），Co（phen）Dy（H2O）（CH3-PhCOO）5（4），Co2（phen）2Dy（NO2-PhCOO）7（5），Co2（phen）2Dy2（NO2-PhCOO）10（6）和Co2（bpy）2Dy2（NO2-PhCOO）10（7），其中phen、bpy、CH3-PhCOOH和NO2-PhCOOH分别是1，10-菲咯啉、2，2 ′-联吡啶、3-甲基苯甲酸和3-硝基苯甲酸。在这些情况下，观察到二，三，和四核Co-Dy簇。直流（DC）磁化率揭示铁磁或反铁磁行为，而动态磁研究揭示了单分子磁体（SMM）的慢磁弛豫的大多数这些化合物。
In this work, based on mixed N-, O-donor ligands, a series of Co(ii)-Dy(iii) compounds are synthesised and characterised by single crystal X-ray diffraction and magnetic studies. These compounds include Co2(phen)2Dy(PhCOO)7 (1), Co2(phen)2Dy2(PhCOO)10 (2), Co(bpy)Dy(H2O)(CH3-PhCOO)5 (3), Co(phen)Dy(H2O)(CH3-PhCOO)5 (4), Co2(phen)2Dy(NO2-PhCOO)7 (5), Co2(phen)2Dy2(NO2-PhCOO)10 (6), and Co2(bpy)2Dy2(NO2-PhCOO)10 (7), where phen, bpy, CH3-PhCOOH, and NO2-PhCOOH are 1,10-phenanthroline, 2,2′-bipyridine, 3-methylbenzoic acid, and 3-nitrobenzoic acid, respectively. In these cases, di-, tri-, and tetranuclear Co-Dy clusters are observed. Direct current (DC) magnetic susceptibility reveals ferromagnetic or antiferromagnetic behaviour, whilst dynamic magnetic studies disclose single molecule magnet (SMM)-like slow magnetic relaxation for most of these compounds.