Synthesis, Crystal Structure and Photoluminescent Property of a New Zn(Ⅱ) Complex Based on 3,4-Bis(2-pyridyl)-5-(4-pyridyl)-1,2,4-triazole

【摘要】 The coordination polymer[Zn_1.5（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 P1,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,D_c=1.668g/cm³,μ=1.320 mm^-1,F（000）=740,R=0.0359 and w R=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.更多还原

【Abstract】 The coordination polymer[Zn_1.5（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 P1,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,D_c=1.668g/cm³,μ=1.320 mm^-1,F（000）=740,R=0.0359 and w R=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.更多还原