A new Ni(II) coordination polymer [Ni(L)2(SCN)2]n(L = 1,4-bis(benzimidazol-1-yl)butane) was synthesized hydrothermally and characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. The...A new Ni(II) coordination polymer [Ni(L)2(SCN)2]n(L = 1,4-bis(benzimidazol-1-yl)butane) was synthesized hydrothermally and characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic system, space group C2/c with a = 9.4760(3), b = 24.0408(8), c = 16.5871(5) A, β = 99.832(3)°, V = 3723.2(2) A3, Z = 4, Dc = 1.348 g/cm3, F(000) = 1576, the final R = 0.0486 and w R = 0.0936 for 2938 observed reflections with I 】 2σ(I) for the complex. Structural analysis shows that the coordination polymer possesses a 2D(4,4) layer structure which is composed of Ni(II) centers bridged by L ligand with two kinds of conformations and further assembled into a 3D supramolecular network via π-π stacking interactions. In addition, the fluorescence and catalytic properties, for the degradation of Congo red, of the complex were investigated.展开更多
A novel ligand 11-oxa-4,5,9,10,12,13-hexaaza-cyclopenta [b] triphenylene （OHCT） and its coordination polymer [Zn（OHCT）（1,2-BDC）]n 1 （1,2-BDC = 1,2-benzenedicarboxylate） were synthesized and characterized. Crys...A novel ligand 11-oxa-4,5,9,10,12,13-hexaaza-cyclopenta [b] triphenylene （OHCT） and its coordination polymer [Zn（OHCT）（1,2-BDC）]n 1 （1,2-BDC = 1,2-benzenedicarboxylate） were synthesized and characterized. Crystallographic data for OHCT： C14H6N6O5, Mr = 274.25, monoclinic, space group P21/c, a = 10.755（3）, b = 11.710（4）, c = 9.516（3） , β = 108.457（4）o, V = 1136.9（6） 3, Dc = 1.602 g/cm3, μ（MoKα） = 0.111 mm-1, F（000） = 560, Z = 4, the final R = 0.1534 and wR = 0.39709. Crystallographic data for 1： C22H10ZnN6O5, Mr = 503.73, triclinic, space group P , a = 6.1411（5）, b = 10.9111（9）, c = 14.1925（1） , α = 89.1830（1）, β = 79.3030（1）, γ = 84.6350（1）o, V = 930.36（1） 3, Dc = 1.798 g/cm3, μ（MoKα） = 1.376 mm-1, F（000） = 508, Z = 2, the final R = 0.0323 and wR = 0.0789. 1 has been obtained by using hydrothermal synthesis and characterized by elemental analysis, IR spectrum, thermal analysis, fluorescence spectrum and single-crystal X-ray diffraction. In complex 1, the zinc atom is five-coordinated with three carboxylate oxygen atoms from three different 1,2-BDC ligands and two nitrogen atoms from one OHCT ligand, showing a distorted trigonal bipyramidal configuration.展开更多
Two zinc（II） complexes, namely, [Zn（L1）Cl2]2 （1） and {[Zn（L2）（tbta）]·3H2O}n （2） （L1 = 1,3-bis（2-methylbenzimidazol-1-ylmethyl）benzene, H2tbta = tetrabromoterephthalic acid, L2 = 1,3-bis（2-methylbe...Two zinc（II） complexes, namely, [Zn（L1）Cl2]2 （1） and {[Zn（L2）（tbta）]·3H2O}n （2） （L1 = 1,3-bis（2-methylbenzimidazol-1-ylmethyl）benzene, H2tbta = tetrabromoterephthalic acid, L2 = 1,3-bis（2-methylbenzimidazol-1-yl）-2-propanol） have been successfully obtained under hydrothermal conditions. Complex 1 displays binuclear structure which is further extended into a 1D supramolecular chain through π–π stacking. Complex 2 features 2D （4,4） network based on L2/tbta2– double linker. The thermal stability, fluorescence properties and catalytic activities of two complexes for degradation of Methyl orange in a Fenton-like process were discussed.展开更多
The title compound,[Zn2（H2C4BIm）（ox）2]·2H2O（1,H2C4BIm = 2,2＇-（1,4-bu-tanediyl）bis（1H-benzimidazole）,has been synthesized by the hydrothermal reaction of Zn（NO3）2·6H2O with H2C4BIm and Na2C2O4 in ...The title compound,[Zn2（H2C4BIm）（ox）2]·2H2O（1,H2C4BIm = 2,2＇-（1,4-bu-tanediyl）bis（1H-benzimidazole）,has been synthesized by the hydrothermal reaction of Zn（NO3）2·6H2O with H2C4BIm and Na2C2O4 in water solution.It crystallizes in the triclinic system,space group P1 with a = 9.445（9）,b = 9.598（9）,c = 14.962（14） ,α = 72.160（10）,β = 79.905（12）,γ = 83.680（11）°,Mr = 633.18,V = 1269（2） 3,Z = 2,Dc = 1.657 g/cm3,F（000） = 644,μ = 1.953 mm-1,the final R = 0.0671 and wR = 0.1689.X-ray crystal structure analysis revealed that 1 is a 3D network with（203）2（20）3 topology in which the ZnII atom can be considered as a 3-connected node and both ox2-and H2C4BIm serve as the linear linkers.展开更多
We successfully synthesized a new cobalt（II） coordination polymer under hydrothermal conditions, [Co（L）0.5（chdc）（H2O）]n （L = 1,4-bis（thiabendazole）butane, H2chdc = 1,4-cyclo- hexanedicarboxylic acid）, whic...We successfully synthesized a new cobalt（II） coordination polymer under hydrothermal conditions, [Co（L）0.5（chdc）（H2O）]n （L = 1,4-bis（thiabendazole）butane, H2chdc = 1,4-cyclo- hexanedicarboxylic acid）, which were then characterized by elemental analyses, TG, IR spectro- scopy and single-crystal X-ray diffraction. It crystallizes in the monoclinic system, space group P21/c with a =10.2855（12）, b = 9.3606（11）, c = 20.436（3） A, β = 91.573°, V= 1966.8（4） A3, Z = 4, C20H22CoN3O5S, Mr = 475.40, Dc = 1.605 g/cm3, μ = 1.018 mm-1 and F（000） = 984. The complex possesses a uninodal three-connected hcb Shubnikov hexagonal plane structure with {63} topology. These planes are further linked into a 3D supramolecular network via O-H…O hydrogen bonds involving coordinated water molecules and oxygen atoms of chdc2- ligands. The fluorescence and catalytic activities of the complex for degradation of Congo red in a Fenton-like process were investigated.展开更多
A transition metal complex Zn(mpc)2(H2O)2(Hmpc=3-methylpyrazole-5-carboxylic acid) has been synth-esized by the reaction of Hmpc with Zn(NO3) 2·6H2O using hydrothermal method,which was characterized by IR spe-ctr...A transition metal complex Zn(mpc)2(H2O)2(Hmpc=3-methylpyrazole-5-carboxylic acid) has been synth-esized by the reaction of Hmpc with Zn(NO3) 2·6H2O using hydrothermal method,which was characterized by IR spe-ctra,elemental analysis and single-crystal X-ray structure analysis.The structure reveals that the complex crystallizes in the trigonal space group R3c with the ZnⅡ atom on a threefold axis,composed of one ZnⅡ atom,two independent mpc-ligands and two coordinated water.Hydrogen bonds link the molecules into a three-dimensional supramolecular architecture.Fluorescent analysis in the dilute EtOH solution shows that the title complex exhibits a broad fluorescent band at 471 nm upon photoexcitation at 280 nm and has a bathochromic shift of the emission energy compared with the free ligand,possibly due to metal-to-ligand charge transfer(MLCT) .CCDC:682402.展开更多
基金supported by the Starting Research Fund from Hebei United University(35398599)the Natural Science Foundation of Hebei Province(B2014209182)
文摘A new Ni(II) coordination polymer [Ni(L)2(SCN)2]n(L = 1,4-bis(benzimidazol-1-yl)butane) was synthesized hydrothermally and characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic system, space group C2/c with a = 9.4760(3), b = 24.0408(8), c = 16.5871(5) A, β = 99.832(3)°, V = 3723.2(2) A3, Z = 4, Dc = 1.348 g/cm3, F(000) = 1576, the final R = 0.0486 and w R = 0.0936 for 2938 observed reflections with I 】 2σ(I) for the complex. Structural analysis shows that the coordination polymer possesses a 2D(4,4) layer structure which is composed of Ni(II) centers bridged by L ligand with two kinds of conformations and further assembled into a 3D supramolecular network via π-π stacking interactions. In addition, the fluorescence and catalytic properties, for the degradation of Congo red, of the complex were investigated.
文摘A novel ligand 11-oxa-4,5,9,10,12,13-hexaaza-cyclopenta [b] triphenylene （OHCT） and its coordination polymer [Zn（OHCT）（1,2-BDC）]n 1 （1,2-BDC = 1,2-benzenedicarboxylate） were synthesized and characterized. Crystallographic data for OHCT： C14H6N6O5, Mr = 274.25, monoclinic, space group P21/c, a = 10.755（3）, b = 11.710（4）, c = 9.516（3） , β = 108.457（4）o, V = 1136.9（6） 3, Dc = 1.602 g/cm3, μ（MoKα） = 0.111 mm-1, F（000） = 560, Z = 4, the final R = 0.1534 and wR = 0.39709. Crystallographic data for 1： C22H10ZnN6O5, Mr = 503.73, triclinic, space group P , a = 6.1411（5）, b = 10.9111（9）, c = 14.1925（1） , α = 89.1830（1）, β = 79.3030（1）, γ = 84.6350（1）o, V = 930.36（1） 3, Dc = 1.798 g/cm3, μ（MoKα） = 1.376 mm-1, F（000） = 508, Z = 2, the final R = 0.0323 and wR = 0.0789. 1 has been obtained by using hydrothermal synthesis and characterized by elemental analysis, IR spectrum, thermal analysis, fluorescence spectrum and single-crystal X-ray diffraction. In complex 1, the zinc atom is five-coordinated with three carboxylate oxygen atoms from three different 1,2-BDC ligands and two nitrogen atoms from one OHCT ligand, showing a distorted trigonal bipyramidal configuration.
基金Supported by the National Natural Science Foundation of China(No.51474086)Natural Science Foundation-Steel and Iron Foundation of Hebei Province(B2015209299)Undergraduate Innovation Programs of North China University of Science and Technology(No.X2015004)
文摘Two zinc（II） complexes, namely, [Zn（L1）Cl2]2 （1） and {[Zn（L2）（tbta）]·3H2O}n （2） （L1 = 1,3-bis（2-methylbenzimidazol-1-ylmethyl）benzene, H2tbta = tetrabromoterephthalic acid, L2 = 1,3-bis（2-methylbenzimidazol-1-yl）-2-propanol） have been successfully obtained under hydrothermal conditions. Complex 1 displays binuclear structure which is further extended into a 1D supramolecular chain through π–π stacking. Complex 2 features 2D （4,4） network based on L2/tbta2– double linker. The thermal stability, fluorescence properties and catalytic activities of two complexes for degradation of Methyl orange in a Fenton-like process were discussed.
基金supported by the Cultivation Fund of the Key Scientific and Technical Innovation Project,Ministry of Education of China (No.708084)the Special Fund for Basic Scientific Research of Central Colleges,Chang’an University (No.CHD2009JC022)
文摘The title compound,[Zn2（H2C4BIm）（ox）2]·2H2O（1,H2C4BIm = 2,2＇-（1,4-bu-tanediyl）bis（1H-benzimidazole）,has been synthesized by the hydrothermal reaction of Zn（NO3）2·6H2O with H2C4BIm and Na2C2O4 in water solution.It crystallizes in the triclinic system,space group P1 with a = 9.445（9）,b = 9.598（9）,c = 14.962（14） ,α = 72.160（10）,β = 79.905（12）,γ = 83.680（11）°,Mr = 633.18,V = 1269（2） 3,Z = 2,Dc = 1.657 g/cm3,F（000） = 644,μ = 1.953 mm-1,the final R = 0.0671 and wR = 0.1689.X-ray crystal structure analysis revealed that 1 is a 3D network with（203）2（20）3 topology in which the ZnII atom can be considered as a 3-connected node and both ox2-and H2C4BIm serve as the linear linkers.
基金supported by the National Natural Science Foundation of China(51474086)Natural Science Foundation-Steel and Iron Foundation of Hebei Province(B2015209299)
文摘We successfully synthesized a new cobalt（II） coordination polymer under hydrothermal conditions, [Co（L）0.5（chdc）（H2O）]n （L = 1,4-bis（thiabendazole）butane, H2chdc = 1,4-cyclo- hexanedicarboxylic acid）, which were then characterized by elemental analyses, TG, IR spectro- scopy and single-crystal X-ray diffraction. It crystallizes in the monoclinic system, space group P21/c with a =10.2855（12）, b = 9.3606（11）, c = 20.436（3） A, β = 91.573°, V= 1966.8（4） A3, Z = 4, C20H22CoN3O5S, Mr = 475.40, Dc = 1.605 g/cm3, μ = 1.018 mm-1 and F（000） = 984. The complex possesses a uninodal three-connected hcb Shubnikov hexagonal plane structure with {63} topology. These planes are further linked into a 3D supramolecular network via O-H…O hydrogen bonds involving coordinated water molecules and oxygen atoms of chdc2- ligands. The fluorescence and catalytic activities of the complex for degradation of Congo red in a Fenton-like process were investigated.
文摘A transition metal complex Zn(mpc)2(H2O)2(Hmpc=3-methylpyrazole-5-carboxylic acid) has been synth-esized by the reaction of Hmpc with Zn(NO3) 2·6H2O using hydrothermal method,which was characterized by IR spe-ctra,elemental analysis and single-crystal X-ray structure analysis.The structure reveals that the complex crystallizes in the trigonal space group R3c with the ZnⅡ atom on a threefold axis,composed of one ZnⅡ atom,two independent mpc-ligands and two coordinated water.Hydrogen bonds link the molecules into a three-dimensional supramolecular architecture.Fluorescent analysis in the dilute EtOH solution shows that the title complex exhibits a broad fluorescent band at 471 nm upon photoexcitation at 280 nm and has a bathochromic shift of the emission energy compared with the free ligand,possibly due to metal-to-ligand charge transfer(MLCT) .CCDC:682402.
