Pajerowski Daniel M, Li Quan, Hyun Jason, Dennis Cindi L, Phelan Daniel, Yan Pengfei, Chen Peng, Li Guangming
National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.
Dalton Trans. 2014 Aug 21;43(31):11973-80. doi: 10.1039/c4dt01329h.
Three chloride-bridged lanthanide compounds, [Ln4Cl6(CH3OH)12(OH)2]·4Cl·2CH3OH [Ln = Gd (), Dy () and Er ()], have been unexpectedly isolated by the reactions of LnCl3·6H2O and N,N'-bis(salicylidene)-1,2-(phenylene-diamine) (H2L). X-ray crystallographic analysis reveals a triclinic cell with a unique defect-dicubane {Ln4} core and the structure across this series is nominally isomorphic. Measurements of direct current magnetic susceptibility and isothermal magnetization give insight into the relevant cluster Hamiltonians for , , and , and alternating current susceptibility shows slow relaxation in , but not in or down to 2 K and up to 1 kHz.
通过LnCl₃·6H₂O与N,N'-双（水杨醛）-1,2-（亚苯基二胺）（H₂L）的反应，意外地分离出了三种氯桥联镧系化合物，[Ln₄Cl₆(CH₃OH)₁₂(OH)₂]·4Cl·2CH₃OH [Ln = Gd (), Dy () 和 Er ()]。X射线晶体学分析揭示了一个具有独特缺陷双立方烷{Ln₄}核的三斜晶胞，并且该系列的结构名义上是同构的。直流磁化率和等温磁化强度的测量深入了解了 、 和 的相关簇哈密顿量，并且交流磁化率表明 在 中存在缓慢弛豫，但在 或降至2 K以及高达1 kHz时不存在。
