3,4-二甲氧基苯乙酸邻菲啰啉镱(III)配合物的合成、晶体结构及荧光光谱

合成了3,4-二甲氧基苯乙酸邻菲啰啉镱(III)配合物(C84H82Yb2N4O24): Yb2(DMPA)6(phen)2](HDMPA=3,4-二甲氧基苯乙酸(C12H12O4), phen=1,10-邻菲啰啉)(CCDC: 757541), 并通过元素分析、红外(IR)光谱、热重分析(TG-DTG)对其进行了表征, 用单晶X射线衍射测定了配合物的晶体结构. 配合物C84H82Yb2N4O24属三斜晶系, 空间群P1, 晶胞参数: a = 1.22877(14) nm, b=1.23235(16) nm, c=1.45234(19) nm, α=91.726(7)°, β=103.321(7)°, γ=113.885(6)°, 晶胞体积: V=1.9379(4) nm3, 晶胞内分子数Z=1, 相对分子质量Mr=1877.62, 电子数F(000)=946, 密度Dc=1.609 g·cm-3, 吸收系数μ(Mo Kα)=2.481 mm-1. 测定了铕和铽掺杂(2.5%, 5.0%, 10.0%, 摩尔分数)的配合物的荧光光谱, 结果表明, 单独的配体没有荧光, 在形成配合物后, 依然显示铕(III)离子和铽(III)离子的特征发射峰, 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.

Synthesis,Crystal Structure and Fluorescence Spectrum of a Ytterbium(III) Complex with 3,4-Dimethoxyphenylacetic Acid and 1,10-Phenanthroline

A ytterbium(III) complex (C84H82Yb2N4O24) Yb2(DMPA)6(phen)2] (phen=1,10-phenanthroline; HDMPA=3,4-dimethoxyphenylacetic acid (C12H12O4)) (CCDC: 757541) was synthesized and characterized by elemental analysis, infrared (IR) spectroscopy and thermogravimetry-derivative thermogravimetry (TG-DTG). Its crystal structure was determined by single crystal X-ray diffraction. The complex, C84H82Yb2N4O24, crystallizes in the monoclinic system in space group P1 with cell parameters of a=1.22877(14) nm, b=1.23235(16) nm, c=1.45234(19) nm, α=91.726(7)°, β=103.321(7)°, γ=113.885(6)°, cell volume: V=1.9379(4) nm3, number of molecules inside the cell: Z=1, relative molecular weight: Mr=1877.62, number of electrons: F(000)=946, density calculated: Dc=1.609 g·cm-3, absorptive parameter: μ(Mo Kα)=2.481 mm-1. The emission spectra of complexes doped with Eu or Tb (2.5%, 5.0%, 10.0%, molar fraction) instead of Yb were also investigated. The results showed that no luminescence emission peak was observed from emission spectrum of free ligand, and the luminescence behavior of complexes results from metal-centered emission. It is indicated that ligand can transfer the energy to the central metal efficiently and can sensitize the central metal.