A new coordination compound, [Co（L223）2（H2O）2]·H2pm（1, L223 = 3,4-bis（2-pyridyl）-5-（3-pyridyl）-1,2,4-triazole and H4 pm = pyromellitic acid）, has been synthesized. The structure of complex 1 has been ch...A new coordination compound, [Co（L223）2（H2O）2]·H2pm（1, L223 = 3,4-bis（2-pyridyl）-5-（3-pyridyl）-1,2,4-triazole and H4 pm = pyromellitic acid）, has been synthesized. The structure of complex 1 has been characterized by X-ray single-crystal diffraction, elemental analysis, IR spectrum analysis and thermogravimetric analysis. Single-crystal X-ray diffraction analysis reveals that complex 1 belongs to the triclinic system, space group P1 with a = 10.2470（8）, b = 10.2879（9）, c = 10.2951（11） ？, α = 109.398（2）, β = 97.6590（10）, γ = 95.3260（10）°, V = 1003.60（16） ？3, Z = 1, Dc = 1.565 g/cm^3, μ = 0.508 mm%^-1, Mr = 945.73, F（000） = 485, the final R = 0.0562 and w R = 0.0783 with I 〉 2σ（I）. Two L223 as chelating ligands link one Co（II） ion to form a 0D motif. Furthermore, the 0D motifs are linked into a 2D coordination pattern with hydrogen bonds. In addition, the antifungal effects of the ligand and the complex were evaluated by the disc diffusion method against Colletotrichum gloeosporioides Penz. 1 represents antifungal activity with high levels of inhibitory potency which is larger than the corresponding ligand.展开更多
A new lanthanide coordination polymer, [Ho（sba）（H2O）2（DMF）2]？H2O？DMF？Cl （1） based on the versatile ligand H2sba （H2sba = 4,4？-dicarboxybiphenyl sulfone）, was prepared and characterized by single-crystal ...A new lanthanide coordination polymer, [Ho（sba）（H2O）2（DMF）2]？H2O？DMF？Cl （1） based on the versatile ligand H2sba （H2sba = 4,4？-dicarboxybiphenyl sulfone）, was prepared and characterized by single-crystal X-ray diffraction, elemental analysis, IR spectroscopy and thermogravimetric analysis. Single-crystal X-ray diffraction indicates that complex 1 belongs to the triclinic system, space group P with a = 10.6942（6）, b = 11.8452（7）, c = 13.1814（8） ？, α = 94.854（2）, ？ = 96.649（2）, γ = 91.663（2）o, V = 1651.30（17） ？3, Z = 2, Dc = 1.565 g？cm-3, μ = 2.597 mm-1, Mr = 777.98, F（000） = 780, the final R = 0.0446 and wR = 0.1116 with I 〉 2？（I）. In the title complex, the Ho（III） ions exhibit 1D ∞-like double chains. The DMF molecules not only make the structure more stable, but also act as hydrogen bond acceptors making the 1D double chains into a three-dimensional （3D） supramolecular framework. In addition, the antifungal effects of the ligand, metal salt and Ho（III） complex have also been studied by the disc diffusion method against Colletotrichum gloeosporioides Penz. It was found that the antifungal activity of complex 1 was better than the corresponding ligand and the metal salt. Complex 1 has potential applications in the antifungal activity.展开更多
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.NZ15015)
文摘A new coordination compound, [Co（L223）2（H2O）2]·H2pm（1, L223 = 3,4-bis（2-pyridyl）-5-（3-pyridyl）-1,2,4-triazole and H4 pm = pyromellitic acid）, has been synthesized. The structure of complex 1 has been characterized by X-ray single-crystal diffraction, elemental analysis, IR spectrum analysis and thermogravimetric analysis. Single-crystal X-ray diffraction analysis reveals that complex 1 belongs to the triclinic system, space group P1 with a = 10.2470（8）, b = 10.2879（9）, c = 10.2951（11） ？, α = 109.398（2）, β = 97.6590（10）, γ = 95.3260（10）°, V = 1003.60（16） ？3, Z = 1, Dc = 1.565 g/cm^3, μ = 0.508 mm%^-1, Mr = 945.73, F（000） = 485, the final R = 0.0562 and w R = 0.0783 with I 〉 2σ（I）. Two L223 as chelating ligands link one Co（II） ion to form a 0D motif. Furthermore, the 0D motifs are linked into a 2D coordination pattern with hydrogen bonds. In addition, the antifungal effects of the ligand and the complex were evaluated by the disc diffusion method against Colletotrichum gloeosporioides Penz. 1 represents antifungal activity with high levels of inhibitory potency which is larger than the corresponding ligand.
基金Supported by the Natural Science Foundation of Ningxia Province(No.NZ15006)
文摘A new lanthanide coordination polymer, [Ho（sba）（H2O）2（DMF）2]？H2O？DMF？Cl （1） based on the versatile ligand H2sba （H2sba = 4,4？-dicarboxybiphenyl sulfone）, was prepared and characterized by single-crystal X-ray diffraction, elemental analysis, IR spectroscopy and thermogravimetric analysis. Single-crystal X-ray diffraction indicates that complex 1 belongs to the triclinic system, space group P with a = 10.6942（6）, b = 11.8452（7）, c = 13.1814（8） ？, α = 94.854（2）, ？ = 96.649（2）, γ = 91.663（2）o, V = 1651.30（17） ？3, Z = 2, Dc = 1.565 g？cm-3, μ = 2.597 mm-1, Mr = 777.98, F（000） = 780, the final R = 0.0446 and wR = 0.1116 with I 〉 2？（I）. In the title complex, the Ho（III） ions exhibit 1D ∞-like double chains. The DMF molecules not only make the structure more stable, but also act as hydrogen bond acceptors making the 1D double chains into a three-dimensional （3D） supramolecular framework. In addition, the antifungal effects of the ligand, metal salt and Ho（III） complex have also been studied by the disc diffusion method against Colletotrichum gloeosporioides Penz. It was found that the antifungal activity of complex 1 was better than the corresponding ligand and the metal salt. Complex 1 has potential applications in the antifungal activity.
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.
