| 基于对羟基苯乙酸及邻菲咯啉的稀土配合物的合成、晶体结构和荧光光谱 | |||||||||
| Synthesis, Crystal Structure and Fluorescence Spectrum of Rare Earth(Ⅲ) Complexes with p-Hydroxyphenylacetic Acid and 1,10-Phenanthroline | |||||||||
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| 摘要: 在乙醇-水体系中合成了5个对羟基苯乙酸及邻菲咯啉稀土配合物：其中4个配合物[RE(HPAA)3(phen)2]·2H2O (RE=Eu (1)，Tb (2)，Dy (3)，Yb (4))具有相同的结构和类似的化学组成；第5个配合物是[Yb(HPAA)2(H2O)2(phen)2](HPAA)·(HHPAA)·2H2O (5)，HHPAA=对羟基苯乙酸，C8H8O3；phen=1，10-邻菲咯啉)，其结构和化学组成与前4个配合物不同。并通过元素分析、红外光谱、热重分析和粉末X-射线衍射对产物进行表征，用单晶X-射线衍射方法测定了配合物5的晶体结构。配合物5 (C56H53N4O16Yb)属于三斜晶系，空间群P21/c，晶胞参数：a=2.206 52(3) nm，b=1.368 76(2) nm，c=1.754 14(2) nm，β=101.167(1)°，晶胞体积：V=5.197 54(12) nm3，晶胞内结构基元数Z=4，分子量Mr=1 211.06。测定了铕、铽和镝配合物的荧光光谱，结果表明，在形成配合物后，依然显示铕(Ⅲ)离子、铽(Ⅲ)离子和镝(Ⅲ)离子的特征发射，这表明配体将吸收的能量有效地转移给了中心离子，配体起到了很好的敏化作用。 | |||||||||
| 关键词: 稀土配合物 对羟基苯乙酸 邻菲咯啉 晶体结构 荧光光谱 | |||||||||
| 基金项目: | |||||||||
| Abstract: Five rare earth complexes [RE(HPAA)3(phen)2]·2H2O (RE=Eu (1), Tb (2), Dy (3), Yb (4), [Yb(HPAA)2(H2O)2(phen)2](HPAA)·(HHPAA)·2H2O (5), HHPAA=p-hydroxyphenylacetic acid, C8H8O3; phen=1,10-phenanthroline), were synthesized and characterized by elemental analysis, infrared spectra, thermogravimetry-derivative thermogravimetry (TG-DTG) and X-ray powder diffraction. The crystal structure of complex 5 was determined by single crystal X-ray diffraction method. The complex, C56H53YbN4O16, crystallizes in the triclinic system, space group P21/c, with cell parameters: a=2.206 52(3) nm， b=1.368 76(2) nm, c=1.754 14(2) nm, β=101.167(1)°, cell volume: V=5.197 54(12) nm3, number of molecules inside the cell: Z=4, relative molecular mass: Mr=1 210.06. The excitation and emission spectra of the complexes 1, 2, 3 were investigated. The luminescence behaviors probably results from the ligand-sensitized metal-centered emission. CCDC: 773376. | |||||||||
| Keywords: rare earth complex p-hydroxyphenylacetic acid 1,10-phenanthroline crystal structure fluorescence spectra | |||||||||
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| 刘建风,陈吉妃,赵国良.基于对羟基苯乙酸及邻菲咯啉的稀土配合物的合成、晶体结构和荧光光谱[J].无机化学学报,2011,27(1):100-106. | |||||||||
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