| 镧系元素(La、Tb、Dy)的喹啉氧基乙酰胺配合物的结构及荧光性质 | |
| Lanthanide(La, Tb, Dy) Complexes with Quinolinyloxy Acetamide Ligand: Crystal Structures and Fluorescence Properties | |
| 摘要: 合成并通过单晶衍射表征了3个稀土配合物[LaL2(NO3)3]·CH3CN(1),[Ln(L)(NO3)3(H2O)](Ln=Tb(2),Dy(3),L=N-苯基-2-(5-氯-8-喹啉氧基)乙酰胺)。在配合物1中,十二配位的La(Ⅲ)离子采取扭曲的二十面体配位构型,分别与来自2个酰胺配体L的4个氧原子和2个氮原子,及3个双齿配位硝酸根配位。配合物2和3的结构与拥有相同有机配体的Pr、Nd、Sm、Eu、Gd和Er配合物同构。在每个配合物中,十配位的稀土离子与来自1个配体L的2个氧原子和1个氮原子,3个双齿配位硝酸根和1个水分子配位,拥有扭曲的双帽四方反棱柱配位构型。固态配合物2和3在可见区发射强荧光。 | |
| 关键词: 酰胺配体 喹啉 稀土配合物 荧光 晶体结构 | |
| 基金项目: 国家自然科学基金(No.21001040)和河南省教育厅自然科学基金(No.12B150011,14B150029)资助项目。 | |
| Abstract: Three lanthanide(Ⅲ) complexes, [LaL2(NO3)3]·CH3CN (1), [Ln(L)(NO3)3(H2O)] (Ln=Tb (2) and Dy (3)) based on L (L=N-phenyl-2-(5-chloro-quinolin-8-yloxy)acetamide) have been synthesized and characterized by elemental analyses, IRspectra and X-ray diffraction analyses. The results reveal that the La(Ⅲ) ion in complex 1 is surrounded by two tridentate amide ligands with NO2 donor set and three bidentate nitrate anions, thus giving distorted icosahedron coordination geometry. By contrast, both complexes 2 and 3 are isostructral with those of the Pr, Nd, Sm, Eu, Gd and Er complexes bearing same ligand. In each complex, the center Ln(Ⅲ) ion with bicapped square antiprism coordination geometry is coordinated by one tridentate L, three bidentate nitrate anions and one water molecule. In addition, in solid state, complexes 2 and 3 could exhibit strong fluorescence emission in the visible region. | |
| Keywords: amide type ligand quinoline lanthanide complex fluorescence crystal structure | |
| 投稿时间：2015-12-04 修订日期：2016-03-17 | |
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| 毛盼东,闫玲玲,吴伟娜,刘珉琦,周利华,伏思连.镧系元素(La、Tb、Dy)的喹啉氧基乙酰胺配合物的结构及荧光性质[J].无机化学学报,2016,32(6):1095-1100. | |
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