Xu Yun, Luo Feng, Zheng Ji-Min
Department of Chemistry, Nankai University, Tianjin 300071, China.
College of Chemistry and Materials Science, HuaiBei Normal University, Huaibei 235000, China.
Polymers (Basel). 2019 Jan 23;11(2):196. doi: 10.3390/polym11020196.
Three types of Ln(III)⁻Co(II) heterometallic compounds, LnCo₂(L1)₇(bipy)₂ (Ln = Pr-, Eu-, Sm-, Gd-, Tb-, Dy-) (L1 = 4-chlorobenzoate, bipy = 2,2'-bipyridine), Ln₂Co₂(L₂)(bipy)₂ (Ln = Sm-, Gd-, Tb-, Dy-, Ho-, Er-, Yb-), (L2 = 2,4-dichlorobenzoate, bipy = 2,2'-bipyridine, phen = 1,10-phenanthroline), and Ln₂Co₃(L1)(bipy)₂ (Ln = Ho-, Er-, Yb-), were synthesized under hydrothermal conditions and characterized by single crystal X-ray diffraction, IR spectroscopy and magnetic measurements. Structural analyses revealed that ⁻ take on a unique linear pentanuclear structural motif. Interestingly, the Ho-containing compound exhibits magnetic relaxation behavior.
在水热条件下合成了三种类型的Ln(III)⁻Co(II)异金属化合物，即LnCo₂(L1)₇(bipy)₂（Ln = Pr⁻、Eu⁻、Sm⁻、Gd⁻、Tb⁻、Dy⁻）（L1 = 4-氯苯甲酸酯，bipy = 2,2'-联吡啶）、Ln₂Co₂(L₂)(bipy)₂（Ln = Sm⁻、Gd⁻、Tb⁻、Dy⁻、Ho⁻、Er⁻、Yb⁻）（L2 = 2,4-二氯苯甲酸酯，bipy = 2,2'-联吡啶，phen = 1,10-菲咯啉）以及Ln₂Co₃(L1)(bipy)₂（Ln = Ho⁻、Er⁻、Yb⁻），并通过单晶X射线衍射、红外光谱和磁性测量对其进行了表征。结构分析表明，⁻呈现出独特的线性五核结构 motif。有趣的是，含Ho化合物表现出磁弛豫行为。
