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化学学报
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化学学报 ›› 2006, Vol. 64 ›› Issue (5): 444-448. 上一篇    下一篇

研究简报

酰胺型三足配体硝酸铽超分子配合物的晶体结构与荧光性质

唐瑜*,1，唐宽镇1，张剑1，谭民裕1，刘伟生1，孙玉希2   

  1. (1兰州大学化学化工学院 兰州 730000)
    (2曲阜师范大学化学系 曲阜 273165)
  • 投稿日期:2005-08-15 修回日期:2005-11-15 发布日期:2006-03-15
  • 通讯作者: 唐瑜

Crystal Structure and Luminescent Property of the Terbium Nitrate Supramolecular Complex with an Amide-type Tripodal Ligand

TANG Yu*,1, TANG Kuan-Zhen1, ZHANG Jian1, TAN Min-Yu1, LIU Wei-Sheng1, SUN Yu-Xi2   

  1. (1 College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000)
    (2 Department of Chemistry, Qufu Normal University, Qufu 273165)
  • Received:2005-08-15 Revised:2005-11-15 Published:2006-03-15
  • Contact: TANG Yu

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968

被引次数

44

通过硝酸铽与新型酰胺型三足配体L (2,2',2''-胺三乙酰苯胺)之间的反应得到配合物[TbL2(H2O)]• (NO3)3(H2O)2(CH3OH), 并用X射线单晶衍射测定了配合物的晶体结构. 配合物为酰胺型三足配体稀土硝酸盐配合物中首例1∶2 (M∶L)型配合物. 配合物为单斜晶系, P21/c空间群, 晶胞参数a＝1.2870(7) nm, b＝1.6590(8) nm, c＝2.8723(12) nm, β＝115.364(2)°, V＝5.5415(5) nm3, Z＝4, R＝0.0399, wR＝0.0922, Tb3＋为9 配位, 呈变形的三帽三角棱柱配位构型. 配合物分子单元通过分子间氢键作用将整个分子连接成三维网状超分子结构. 室温下, 在紫外光激发下配合物固体表现出Tb3＋的特征荧光发射.

关键词: 酰胺型三足配体, 硝酸铽超分子配合物, 合成, 晶体结构, 荧光性质

Solid complex of terbium nitrate with a new amide type tripodal ligand, 2,2',2''-nitrilotris- (N-phenylacetamide) (L) has been prepared. The X-ray single-crystal diffraction analysis indicates that the complex [TbL2(H2O)]•(NO3)3(H2O)2(CH3OH) conformed to a 1∶2 metal-to-ligand stoichiometry, which is the first example of 1∶2 coordination structure of lanthanide nitrate complexes with such ligand. The crystal structure belongs to monoclinic system with space group P21/c, a＝1.2870(7) nm, b＝1.6590(8) nm, c＝2.8723(12) nm, β＝115.364(2)°, V＝5.5415(5) nm3, Z＝4, R＝0.0399, wR＝0.0922. The coordination polyhedron around Tb is a distorted tricapped trigonal prism, and furthermore the ML2 complex units are hydrogen bonded to yield infinite 3D supramolecular network. At room temperature, the complex solid exhibited characteristic emission under UV light excitation.

Key words: amide type tripodal ligand, terbium nitrate supramolecular complex, synthesis, crystal structure, luminescent property