| 三种Er(Ⅲ)配合物的合成、晶体结构及光物理研究 | |
| Three Er(Ⅲ) Coordination Polymers: Synthesis, Crystal Structures and Photophysical Properties | |
| 摘要: 分别以均苯四甲酸，对硝基苯甲酸，肉桂酸为配体，采用水热合成方法，得到了3种Er(Ⅲ)配位聚合物：{[Er2(btec)1.5(H2O)4]·2H2O}n (1)，[Er4(NO2-C6H4COO)12(H2O)10]·2H2O (2)，[Er(C9H7O2)3]n (3)。通过X-光单晶衍射确定了它们的结构。结构分析表明，配合物1是1个具有三维结构的配位聚合物，其构筑单元为{[Er2(btec)1.5(H2O)4]·2H2O}，每个结构单元中含有4个Er3+离子，它们属于2种晶体学类型，以及3个配位方式不同的均苯四甲酸根。配合物2是1个四核配合物，在同1个分子中，含有4个Er3+离子，它们也属于2种晶体学类型，在2的晶体中存在大量的氢键。配合物3是1个一维配位聚合物。实验测定了各配合物晶体粉末的FP，IR，UV-Vis-NIR等光谱，对光谱进行了分析指认，对比了3个配合物的近红外发光。 | |
| 关键词: Er(Ⅲ)配位聚合物 晶体结构 近红外发光 | |
| 基金项目: | |
| Abstract: Three Er(Ⅲ) coordination complexes: {[Er2(btec)1.5(H2O)4]·2H2O}n (1), [Er4(NO2-C6H4COO)12(H2O)10]·2H2O (2), [Er(C9H7O2)3]n (3) have been synthesized with the 1,2,4,5-benzenetetracarboxylic acid, p-nitro benzoic acid and cinnamate as the ligand by the hydrothermal method. The structures were determined by single-crystal X-ray diffraction. Structure analysis indicates that the complex 1 is a 3D structural polymer with the constructed unit of {[Er2(btec)1.5(H2O)4]·2H2O}, in which four Er3+ belong to two kinds of crystallographic types. There are three different coordination fashions of benzenetetracarboxylic acid radical in the unit of molecule. The complex 2 is a four nuclear molecule. There are four Er3+ ions in the same molecule, which belong to two kinds of crystallographic types. A lot of hydrogen bonds were formed in the crystal of complex 2. The complex 3 is a 1D coordination polymer. The fluorescence spectra, IR, and UV-Vis-NIR of the complexes were measured and analyzed. The NIR luminescence of three coordination polymers were compared. CCDC: 826590, 1; 826591, 2; 826952, 3. | |
| Keywords: Er(Ⅲ) coordination complex crystal structures NIR luminescence | |
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| 李淑梅,牛淑云,金 晶,迟玉贤,吕春欣,朱文婷,李 野,张广宁.三种Er(Ⅲ)配合物的合成、晶体结构及光物理研究[J].无机化学学报,2011,27(9):1697-1704. | |
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