Abstract A series of bifunctional [Hpy]2[Ln2(NO3)2(ampy)4(H2shi)2] ({Ln2}; Ln = Eu(1), Gd(2) and Dy(3); H3shi = salicylhydroxamic acid; Hampy = 5-aminopyridine-2-carboxylic acid) have been synthesized and characterized. Single-crystal X-ray diffraction analyses reveal that complexes 1 and 3 are isostructural. The complexes {Ln2} exhibit either photophysical or magnetic properties in respect to the central lanthanide ion. It is rarely observed that 1 gives bright and red emission with high quantum yield (16%) and a long luminescence lifetime (547 μs). Magnetic measurement reveals that 3 exhibits significant single molecule magnet behavior with an effective energy barrier of 31 K.

中文翻译：

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{Ln2} 组装肟的结构、光物理和磁学研究

摘要一系列双功能[Hpy]2[Ln2(NO3)2(ampy)4(H2shi)2]({Ln2};Ln=Eu(1),Gd(2)和Dy(3);H3shi=水杨基异羟肟酸; Hampy = 5-氨基吡啶-2-羧酸）已被合成和表征。单晶 X 射线衍射分析表明配合物 1 和 3 是同构的。复合物 {Ln2} 表现出相对于中心镧系元素离子的光物理或磁特性。很少观察到 1 以高量子产率 (16%) 和长发光寿命 (547 μs) 发出明亮的红色发射。磁性测量表明，3 表现出显着的单分子磁体行为，有效能垒为 31 K。