Synthesis and Crystal Structure of a Two—dimensional Polymeric Holmium |
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作者姓名: | 张敏 孔繁荣 |
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作者单位: | Department of Chemistry, Capital Normal University, Beijing 100037 |
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基金项目: | 北京市教委科研项目,, |
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摘 要: | The title polymeric complex [Ho(H2saln)1.5(NO3)3](H2saln=N,N'-bissalicyclidene-ethylenediamine) C24H24N6O12Ho was prepared and its crystal was characterized by X-ray diffraction. The ligand is dischiff base from salicylaldehyde and ethylenediamine. The complex crystallizes in trigonal system, space group Pc1(No. 165), Mr=753.42, a=15.818(2), c=16.978(3) , V=3681(2) 3, Dx=1.360 g/cm3, Z=4, μ=2.2286 mm-1, F(000)=1492, R=0.049, Rw=0.061. In the complex the coordination number of Ho(Ⅲ) is 9 with the geometry of a tricapped trigonal prism. All of the coordination atoms are oxygen atoms. The Ho(Ⅲ) ions are bridged by the dischiff base to form an infinite two-dimensional polymeric network, parellel to the (001) plane.
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关 键 词: | 合成 晶体结构 聚合配合物 席夫碱 钬配合物 |
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