| Synthesis and Crystal Structure of a New Supramolecular Compound Constructed from Flexible 1,1＇-（1,4-Butanediyl）bis（imidazole） and 1,2,4,5-Benzenetetracarboxylic Acid |
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| 作者姓名： | LI Yan-Ge YAO Jing-Cai |
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| 作者单位： | [1]College of Chemistry andEnvironmental Science,Henan Normal University, Xinxiang, Henan 453007, China [2]College of Chemistry and Chemical Engineering,Luoyang Normal University, Luoyang 471022, China |
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| 基金项目： | supported by the Natural Science Foundation of Henan Province （No 092102310075） |
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| 摘 要： | A new bis(imidazolium) compound,H2L(H2btec)2]·H4btec(1,L=1,1'-(butane-1,4-diyl)bis(imidazole),H4btec=1,2,4,5-benzenetetracarboxylatic acid),has been synthesized and structurally characterized by single-crystal X-ray diffraction.The title compound crystallizes in the monoclinic system,space group Pnma,with a=13.3908(11),b=13.9249(12),c=16.2166(14),V=2957.6(4)3,Z=4,Mr=698.55,Dc=1.569 mg/m3,F(000)=1448,μ(MoKα)=0.130 mm-1,the final R=0.0584 and wR=0.1538 for 4295 observed reflections with I2σ(I).The compound consists of one 1,1'-(butane-1,4-diyl)bis(imidazolium) cation,one neutral H4btec and one H2btec2-(Only two para carboxyl groups are deprotonated,and two protonated ones remain free) anion.A one-dimensional hydrogen bonding chain and a 2D hydrogen bonding network are formed via intermolecular N-H…O and O-H…O hydrogen bonds.These adjacent chains are further stacked through intermolecular π-π and hydrogen bonding interactions to form a 3D supramolecular network.
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| 关 键 词： | 复合结构 咪唑 晶体 合成 超分子 标题化合物 柔性 人工 |
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