求翻译,稀土

发布网友发布时间：2023-05-13 14:29

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热心网友时间：2023-12-06 02:45

求翻译，稀土

热心网友时间：2023-12-06 02:45

Abstract: Four lanthanide coordination complexes, namely, [Ln=Sm(1),Eu(2), Dy(3), Ho(4));2，3-DCIBA=2，3-dichlorobenzoate;5，5’-demebipy=5，5’-dmethybipyridine) were synthesized and characterized by elemental analysis, infrared spectroscopy and single crystal X-ray diffraction. Findings indicated that complex 3 was a dinuclear molecule, and the center Dy3+ was eight-coordinated. Each dinuclear units could be connected by H bond and halogen-halogen interactions. Luminescent property of complex 2 suggested the typical intense emissions of Eu3+ ions. Thermal analysis showed that the complexes decomposed in three steps: the coordination water was lost firstly then the neutral ligand 5,5' dmebipy was lost and lastly the 2,3-DClBA ligand was lost.
Keywords: lanthanide complexes; crystal structure; supramolecular, H bond; halogen-halogen interactions; luminescent property;
TG/DSC; rare earths.
摘要：研究了四种镧系元素配合物[Ln = Sm（1），Eu（2），Dy（3），Ho（4））; 2,3-DCIBA = 2,3-二氯苯甲酸酯; demebipy = 5,5'-二甲基联吡啶），并通过元素分析，红外光谱和单晶X-射线衍射表征。结果表明，配合物3是一个双核分子，Dy3 +的中心是八配位的。每个双核单元可以通过H键和卤素 - 卤素相互作用连接。配合物2的发光性质表明Eu3 +离子的典型强烈发射。热分析表明，配合物分三步分解：配位水先失去中性配体5,5'dmebipy，最后失去2,3-DClBA配体。
关键词：镧系元素配合物; 晶体结构; 超分子，H键; 卤素 - 卤素相互作用; 发光性能;
TG / DSC; 稀土。