| 以4,4'-(1-咪唑基亚甲基)二苯甲酸为配体的锌配合物的合成、晶体结构和荧光性质 |
| Syntheses, Crystal Structures and Photoluminescent Properties of Two Zinc(Ⅱ) Coordination Polymers Derived from 4,4'-((1H-Imidazol-1-yl) methylene) dibenzoic Acid |
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| 摘要: 以Zn（NO3）2·6H2O和4，4'-（1-咪唑基亚甲基）二苯甲酸（H2IMB）为原料，在不同溶剂热条件下反应，得到2个结构不同的配合物[Zn（HIMB）2]n（1）和{[Zn（IMB）]·1.5H2O}n（2），对它们进行了X射线单晶衍射分析、元素分析、红外光谱分析、热重分析和粉末衍射。配合物1属于正交晶系，C2221空间群，a=0.935 2（3 nm，b=2.583 3（8 nm，c=1.396 4（4 nm，V=3.373 6（18 nm3，Z=4，Mr=707.98，Dc=1.394 g·cm-3，μ=0.786，F（000）=1 456，R1=0.048 6，wR2=0.120 1（I>2σ（I））。配合物2属于四方晶系，I41/acd空间群，a=1.853 5（2 nm，b=1.853 5（2 nm，c=4.309 7（5 nm，V=14.806（4 nm3，Z=32，Mr=412.69，Dc=1.481 g·cm-3，μ=1.360，F（000）=6 752，R1=0.043 7，wR2=0.117 1（I>2σ（I））。单晶结构分析显示，配合物1拥有二维二重贯穿聚索烃格子状层状结构，而配合物2具有三维二重贯穿（3，6）-连接（611.84）（63）2网状结构。结果说明了溶剂在配合物组装过程中起着非常重要的作用。此外，还研究了2个配合物的荧光性质。 |
| 关键词: 锌配合物 双官能团配体 晶体结构 荧光性质 |
| 基金项目: 国家自然科学基金（No.21671107）资助项目。 |
| Abstract: Two zinc(Ⅱ) coordination polymers,[Zn(HIMB)2]n (1) and {[Zn(IMB)]·1.5H2O}n (2), (H2IMB=4,4'-((1H-imidazol-1-yl) methylene) dibenzoic acid), have been synthesized and characterized by IR spectroscopy, elemental analyses, thermogravimetric analysis (TGA), powder X-ray diffraction (PXRD), and single-crystal X-ray diffraction. Complex 1 crystallizes in orthorhombic, space group C2221 with a=0.935 2(3) nm, b=2.583 3(8) nm, c=1.396 4(4) nm, V=3.373 6(18) nm3, Mr=707.98, Dc=1.394 g·cm-3, F(000)=1 456, μ=0.786 mm-1 and Z=4. The final R1=0.048 6 and wR2=0.120 1 for 2 794 observed reflections when I>2σ(I). Complex 2 belongs to tetragonal, space group I41/acd with a=1.853 5(2) nm, b=1.853 5(2) nm, c=4.309 7(5) nm, V=14.806 (4) nm3, Mr=412.69, Dc=1.481 g·cm-3, F(000)=6 752, μ=0.136 0 mm-1 and Z=32. The final R1=0.043 7 and wR2=0.117 1 for 3 615 observed reflections when I>2σ(I). Structural analyses reveal that complex 1 shows a 2D→2D polycatenane of 2-fold interpenetrated sql layer, whereas complex 2 possesses a 3D 2-fold interpenetrated (3,6)-connected net with the point symbol of (611.84)(63)2. The results show that the solvent plays a significant role in the structure of the final products. |
| Keywords: zinc (Ⅱ) coordination polymer bifunctional ligand crystal structure luminescence |
| 投稿时间：2018-07-30 修订日期：2018-10-30 |
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| 喻敏,宣芳,刘光祥.以4,4'-(1-咪唑基亚甲基)二苯甲酸为配体的锌配合物的合成、晶体结构和荧光性质[J].无机化学学报,2019,35(1):133-140. |
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