基于四溴代对苯二甲酸构筑的两个Cu(Ⅱ)配位聚合物的合成与晶体结构 |
Syntheses and Crystal Structures of Two Cu(Ⅱ) Coordination Complexes Based on 2,3,5,6-Tetrabromoterephthalic Acid |
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摘要: 在室温条件下,以甲醇和水为混合溶剂,由四溴代对苯二甲酸(H2TBTA)和硝酸铜分别与吡啶(py)和咪唑(im)构筑了2个一维(1D)铜配位聚合物:[Cu(TBTA)(py)3]n(1)和{[Cu(TBTA)(im)3]·(H2O)}n(2),对2个配合物进行了元素分析、红外分析、热重分析和X-射线单晶衍射等表征。在配合物1和2中,中心Cu(Ⅱ)离子都处于五配位环境;H2TBTA配体中羧基均采用单齿配位模式;配合物2存在π-π相互作用且氢键较1丰富。 |
关键词: 铜配合物 四溴代对苯二甲酸 氢键 π-π作用 |
基金项目: 国家国际科技合作(No.2011DFA51980)和省自然科学基金(No.2011081022)资助项目。 |
Abstract: Two one dimension (1D) Cu(Ⅱ) complexes with 2,3,5,6-tetrabromoterephthalic acid (H2TBTA), [Cu(TBTA)(py)3]n (1) (py=pyridine) and {[Cu(TBTA)(im)3]·(H2O)}n (2) (im=imdazole) were synthesized in CH3OH/H2O mixed solution at room temperature, which have been characterized by element analyses, IR spectra, thermogravimetric analyses and single-crystal X-ray diffraction. In complexes 1 and 2, each center Cu(Ⅱ) ion is five-coordinated and all carboxylate groups of H2TBTA adopt mono-dentate coordination mode. H-bonding interactions in complex 2 are richer than 1 and there exists π-π interactions in 2. CCDC: 946787, 1; 911736, 2. |
Keywords: Cu(Ⅱ) complex 2,3,5,6-tetrabromoterephthalic acid H-bonding π-π interaction |
投稿时间:2013-08-14 修订日期:2014-04-02 |
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肖立群,乔晋忠,胡拖平.基于四溴代对苯二甲酸构筑的两个Cu(Ⅱ)配位聚合物的合成与晶体结构[J].无机化学学报,2014,30(9):2127-2133. |
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