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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。
Two one-dimensional (1D) copper coordination sites were constructed from tetrabromoterephthalic acid (H2TBTA) and copper nitrate with pyridine (py) and imidazole (im) at room temperature with methanol and water as the mixed solvents The two complexes were characterized by elemental analysis of [Cu (TBTA) (py) 3] n (1) and {[Cu (TBTA) (im) 3] · (H2O)} n Analysis, thermogravimetric analysis and X-ray single crystal diffraction characterization. In complexes 1 and 2, the center Cu (Ⅱ) ions are all in a five-coordinate environment; the carboxyl groups in the H2TBTA ligand adopt the monodentate coordination mode; the π-π interaction exists in the complex 2 and the hydrogen bonds are more abundant than those in the complex 1.