The coordination polymer [Zn1.5（2,2？,4？？-tpt）（tpa）2]n （2,2？,4？？-tpt = 3,4-bis（2- pyridyl）-5-（4-pyridyl）-1,2,4-triazole, H2tpa = terephthalic acid） has been obtained by solution evaporation method and c...The coordination polymer [Zn1.5（2,2？,4？？-tpt）（tpa）2]n （2,2？,4？？-tpt = 3,4-bis（2- pyridyl）-5-（4-pyridyl）-1,2,4-triazole, H2tpa = terephthalic acid） has been obtained by solution evaporation method and characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. The title compound crystallizes in the triclinic system, space group P , with a = 10.331（3）, b = 10.596（1）, c = 14.966（3） ？, β = 99.029（0）o, V = 1448.86（6） ？3, Z = 2, Dc = 1.668 g/cm3, μ = 1.320 mm-1, F（000） = 740, R = 0.0359 and wR = 0.0841 with I 〉 2σ（I））. In this polymer, the asymmetric unit contains two crystallographically independent Zn（II） ions in different coordination environments. Zn（1） ion is five-coordinated, forming a distorted tetragonal pyramidal geometry, while the Zn（2） ion is six-coordinated to get a distorted octahedral geometry. Each Zn（II） ion is linked by 2,2？,4？？-tpt and H2tpa ligands, forming an infinite 2D structure. The existence of O（8）–H（8）？？？O（2） hydrogen bonding interactions leads the 2D chains to generate a 3D structure. In addition, 1 shows strong photoluminescent emissions in the solid state at room temperature, so it can be used as potential optical materials.展开更多
基金Supported by the Natural Science Foundation of Ningxia(No.NZ15006)the Research Project of Ningxia Colleges and Universities(No.NGY2017004)
文摘The coordination polymer [Zn1.5（2,2？,4？？-tpt）（tpa）2]n （2,2？,4？？-tpt = 3,4-bis（2- pyridyl）-5-（4-pyridyl）-1,2,4-triazole, H2tpa = terephthalic acid） has been obtained by solution evaporation method and characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. The title compound crystallizes in the triclinic system, space group P , with a = 10.331（3）, b = 10.596（1）, c = 14.966（3） ？, β = 99.029（0）o, V = 1448.86（6） ？3, Z = 2, Dc = 1.668 g/cm3, μ = 1.320 mm-1, F（000） = 740, R = 0.0359 and wR = 0.0841 with I 〉 2σ（I））. In this polymer, the asymmetric unit contains two crystallographically independent Zn（II） ions in different coordination environments. Zn（1） ion is five-coordinated, forming a distorted tetragonal pyramidal geometry, while the Zn（2） ion is six-coordinated to get a distorted octahedral geometry. Each Zn（II） ion is linked by 2,2？,4？？-tpt and H2tpa ligands, forming an infinite 2D structure. The existence of O（8）–H（8）？？？O（2） hydrogen bonding interactions leads the 2D chains to generate a 3D structure. In addition, 1 shows strong photoluminescent emissions in the solid state at room temperature, so it can be used as potential optical materials.
