Chiral 1D Dy(III) compound showing slow magnetic relaxation.
Chiral 1D Dy(III) compound showing slow magnetic relaxation.
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DOI：
10.1039/c1dt11582k
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发表时间：
2011-11
影响因子：
4
通讯作者：
F. Luo;Zhen-wei Liao;Yu-mei Song;Hai-xiao Huang;Xiao-zhao Tian;Gong-ming Sun;Yan Zhu;Zi-Zun Yuan;M. Luo;Shu-juan Liu;Wen-yuan Xu;Xue-feng Feng
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文献类型：
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作者：
F. Luo;Zhen-wei Liao;Yu-mei Song;Hai-xiao Huang;Xiao-zhao Tian;Gong-ming Sun;Yan Zhu;Zi-Zun Yuan;M. Luo;Shu-juan Liu;Wen-yuan Xu;Xue-feng Feng
本文报道了一种手性Dy（III）化合物Dy（L）（3）（1，HL = 2-甲基苯甲酸）的合成。在1内，七配位Dy（III）离子沿着a方向被双L羧基和单L氧桥联，形成一维螺旋链。磁性研究表明小的链内铁磁相互作用。交流（AC）磁测量显示了同相（“Z”）和异相（“Z”）中的磁化率的频率依赖性。而在1000 Oe静态场下也没有发现明显的峰值，说明低温下存在量子隧穿效应。
Herein, we present one chiral Dy(III) compound, namely Dy(L)(3)(1, HL = 2-methylbenzoic acid), synthesized from the achiral HL ligand. Within 1, along a direction the seven-coordinated Dy(III) ion are bridged by double L carboxylate and single L oxygen to give rise to the 1D helical chain. The magnetic studies suggest small intra-chain ferromagnetic interactions. Alternating current (AC) magnetic measurements show a frequency dependence of magnetic susceptibilities in both in-phase, χ', and out-of-phase, χ''. However, no obvious peak can be found even under 1000 Oe static field, suggesting the prevalence of quantum tunnelling effect at low temperature.