The title complex [Zn(HPDB)2(H2O)2]n·2nDMSO·2nH2O(H2-PDB is pyridine-3, 4-dicarboxylic acid and DMSO the dimethyl sulphoxide) was synthesized under traditional solution condition. Its crystal (C18H28N...The title complex [Zn(HPDB)2(H2O)2]n·2nDMSO·2nH2O(H2-PDB is pyridine-3, 4-dicarboxylic acid and DMSO the dimethyl sulphoxide) was synthesized under traditional solution condition. Its crystal (C18H28N2O14S2Zn) belongs to monoclinic system, space group P21/c with a = 8.2791 (6), b = 12.5495(10), c = 13.6519( 11 )A°, β = 105.294(2)°, V = 1368.18(18)A°^3, Z = 2, Mr = 625.91, Dx = 1.514 g/cm^3,μ = 1.117 mm^-1, F(000) = 648, R = 0.0654 and wR = 0.1654 for 2414 observed reflections (I 〉 2σ(I)). It has a 2-D planar network, in which the Zn atom is six-coordinated and hydrogen bonds between carboxylate groups, DMSO and water molecules result in the final 3D structure.展开更多
2-Phenylfuran-3,4-dicarboxylic acid anhydride reacted with seven aromatic compounds, of which five gave keto acids in yields of 94%-63%. The structure of the keto acid was elucidated by reducing it to hydroxy acid and...2-Phenylfuran-3,4-dicarboxylic acid anhydride reacted with seven aromatic compounds, of which five gave keto acids in yields of 94%-63%. The structure of the keto acid was elucidated by reducing it to hydroxy acid and analyzing with NMR technique.展开更多
A new cadmium(Ⅱ) polymer [Cd(tdc)(Phen)]n 1 (H2tdc = thiophene-3,4-dicar-boxylic acid, Phen = 1,10-phenanthroline) was synthesized under hydrothermal conditions. The compound crystallizes in the triclinic sys...A new cadmium(Ⅱ) polymer [Cd(tdc)(Phen)]n 1 (H2tdc = thiophene-3,4-dicar-boxylic acid, Phen = 1,10-phenanthroline) was synthesized under hydrothermal conditions. The compound crystallizes in the triclinic system, space group P , with a = 7.3150(10), b = 10.3598(14), c = 10.8784(15) , α = 82.2740(10), β = 72.9730(10), γ = 80.236(2)°, V = 773.68(18) 3, Z = 2, Mr = 462.74, Dc = 1.986 Mg/m3, μ = 1.58 mm-1, F(000) = 456, the final R = 0.0218 and wR = 0.0465 for 3361 observed reflections with Ⅰ 〉 2σ(Ⅰ). The compound presents a one-dimensional (1-D) double-stranded structure and exhibits fluorescent emission at room temperature. Furthermore, infrared spectroscopy, elemental analyses, thermogravimetric analysis and powder X-ray diffraction properties of the compound are also investigated.展开更多
A new Co(ll) polymer [Co(tdc)(l,4-bimb)]n 1 (H2tdc = thiophene-2,3-dicarboxy- lic acid, 1,4-bimb -- 1,4-bis(imidazol-1 '-yl)butane) was synthesized under hydrothermal conditions The compound crystallizes in...A new Co(ll) polymer [Co(tdc)(l,4-bimb)]n 1 (H2tdc = thiophene-2,3-dicarboxy- lic acid, 1,4-bimb -- 1,4-bis(imidazol-1 '-yl)butane) was synthesized under hydrothermal conditions The compound crystallizes in the monoclinic system, space group C2/c with a = 15.643(9), b = 8.839(5), c=12.952(7) A, β = 105.964(6)°, V= 1721.8(16) A3, Z = 4, Mr = 419.32, Dc= 1.618 Mg/m3,μ = 1.149 mm-1, F(000) = 860, the final R = 0.0243 and wR =0.0613 for 1460 observed reflections with I 〉 2σ(I). The compound presents a three-dimensional (3D) network extended by both tdc2- anions and 1,4-bimb ligands in which the tdc2- anions employ a chelating coordination mode. From the topology point of view, the structure could be described as a 3D 4-connected 65.8 CdSO4-type net. Infrared spectroscopy, elemental analyses, thermogravimetric analysis and powder X-ray diffraction properties of 1 are also investigated.展开更多
A new coordination polymer associated with zinc ion,[Zn(Tda)(bpp)] n (1,H 2 tda=thiophene-2,5-dicarboxylic acid,bpp=1,3-bis(4-pyridyl)propane),was prepared under solvothermal conditions,and characterized by si...A new coordination polymer associated with zinc ion,[Zn(Tda)(bpp)] n (1,H 2 tda=thiophene-2,5-dicarboxylic acid,bpp=1,3-bis(4-pyridyl)propane),was prepared under solvothermal conditions,and characterized by single-crystal X-ray diffraction,elemental analysis and IR spectra.The complex belongs to monoclinic,space group P2 1 /c with a=9.8799(4),b=12.0430(6),c=15.4269(9),β=95.424(5) o,V=1827.33(16) 3,Z=4,D c=1.577 g/cm 3,S=1.074,μ=1.486 mm-1,F(000)=888,M r=433.80,R=0.0359 and wR=0.0968 for 2685 observed reflections (I 2σ(Ⅰ)).Complex 1 displays an interesting 2D lattice structure.In 1,four coordinated zinc ions were bridged by Tda and bpp ligands to generate a (4,4) two-dimensional layer.The thermogravimetric analysis,powder X-ray diffraction (XRD) and luminescent properties for 1 also have been explored.展开更多
A 4d-4f heterometallic coordination polymer, [AgNd(pydc)2].2H2O (1) (H2pydc=pyridine-3,4-dicarboxylic acid), was synthesized under hydrothermal conditions, and fimher characterized by elemental analysis, IR, the...A 4d-4f heterometallic coordination polymer, [AgNd(pydc)2].2H2O (1) (H2pydc=pyridine-3,4-dicarboxylic acid), was synthesized under hydrothermal conditions, and fimher characterized by elemental analysis, IR, thermogravimetric analysis and single-crystal X-ray dif- fraction. Complex 1 featured a three-dimensional (3D) framework containing one-dimensional (1D) channels occupied by free water molecules, which was constructed from 1D inorganic heterometallic chains and linear pydc linkers. To our knowledge, complex 1 represented a rare example of 3D open-framework 4d-4f heterometallic coordination polymer. After removal of the water molecules fi'om complex 1, the remaining material had high thermal stability. Moreover, the near-infrared luminescent properties of 1 were also investigated in the solid state.展开更多
基金This work was supported by the State Key Basic Research and Development Plan of China (001CB108906), the NNSF of China (No. 20173063) and NSF of Fujian Province (E0020001)
文摘The title complex [Zn(HPDB)2(H2O)2]n·2nDMSO·2nH2O(H2-PDB is pyridine-3, 4-dicarboxylic acid and DMSO the dimethyl sulphoxide) was synthesized under traditional solution condition. Its crystal (C18H28N2O14S2Zn) belongs to monoclinic system, space group P21/c with a = 8.2791 (6), b = 12.5495(10), c = 13.6519( 11 )A°, β = 105.294(2)°, V = 1368.18(18)A°^3, Z = 2, Mr = 625.91, Dx = 1.514 g/cm^3,μ = 1.117 mm^-1, F(000) = 648, R = 0.0654 and wR = 0.1654 for 2414 observed reflections (I 〉 2σ(I)). It has a 2-D planar network, in which the Zn atom is six-coordinated and hydrogen bonds between carboxylate groups, DMSO and water molecules result in the final 3D structure.
文摘2-Phenylfuran-3,4-dicarboxylic acid anhydride reacted with seven aromatic compounds, of which five gave keto acids in yields of 94%-63%. The structure of the keto acid was elucidated by reducing it to hydroxy acid and analyzing with NMR technique.
基金supported by the National Natural Science Foundation of China (No. 21172105)the Foundation of the Education Department of Henan Province (No. 2011A150021)
文摘A new cadmium(Ⅱ) polymer [Cd(tdc)(Phen)]n 1 (H2tdc = thiophene-3,4-dicar-boxylic acid, Phen = 1,10-phenanthroline) was synthesized under hydrothermal conditions. The compound crystallizes in the triclinic system, space group P , with a = 7.3150(10), b = 10.3598(14), c = 10.8784(15) , α = 82.2740(10), β = 72.9730(10), γ = 80.236(2)°, V = 773.68(18) 3, Z = 2, Mr = 462.74, Dc = 1.986 Mg/m3, μ = 1.58 mm-1, F(000) = 456, the final R = 0.0218 and wR = 0.0465 for 3361 observed reflections with Ⅰ 〉 2σ(Ⅰ). The compound presents a one-dimensional (1-D) double-stranded structure and exhibits fluorescent emission at room temperature. Furthermore, infrared spectroscopy, elemental analyses, thermogravimetric analysis and powder X-ray diffraction properties of the compound are also investigated.
基金Supported by the Natural Science Foundation of Henan Province(No.132300410326)
文摘A new Co(ll) polymer [Co(tdc)(l,4-bimb)]n 1 (H2tdc = thiophene-2,3-dicarboxy- lic acid, 1,4-bimb -- 1,4-bis(imidazol-1 '-yl)butane) was synthesized under hydrothermal conditions The compound crystallizes in the monoclinic system, space group C2/c with a = 15.643(9), b = 8.839(5), c=12.952(7) A, β = 105.964(6)°, V= 1721.8(16) A3, Z = 4, Mr = 419.32, Dc= 1.618 Mg/m3,μ = 1.149 mm-1, F(000) = 860, the final R = 0.0243 and wR =0.0613 for 1460 observed reflections with I 〉 2σ(I). The compound presents a three-dimensional (3D) network extended by both tdc2- anions and 1,4-bimb ligands in which the tdc2- anions employ a chelating coordination mode. From the topology point of view, the structure could be described as a 3D 4-connected 65.8 CdSO4-type net. Infrared spectroscopy, elemental analyses, thermogravimetric analysis and powder X-ray diffraction properties of 1 are also investigated.
基金supported by the Youth Foundation of Guangxi Normal University
文摘A new coordination polymer associated with zinc ion,[Zn(Tda)(bpp)] n (1,H 2 tda=thiophene-2,5-dicarboxylic acid,bpp=1,3-bis(4-pyridyl)propane),was prepared under solvothermal conditions,and characterized by single-crystal X-ray diffraction,elemental analysis and IR spectra.The complex belongs to monoclinic,space group P2 1 /c with a=9.8799(4),b=12.0430(6),c=15.4269(9),β=95.424(5) o,V=1827.33(16) 3,Z=4,D c=1.577 g/cm 3,S=1.074,μ=1.486 mm-1,F(000)=888,M r=433.80,R=0.0359 and wR=0.0968 for 2685 observed reflections (I 2σ(Ⅰ)).Complex 1 displays an interesting 2D lattice structure.In 1,four coordinated zinc ions were bridged by Tda and bpp ligands to generate a (4,4) two-dimensional layer.The thermogravimetric analysis,powder X-ray diffraction (XRD) and luminescent properties for 1 also have been explored.
基金Project supported by National Natural Science Foundation of China (20971004)the Key Project of Chinese Ministry of Education (210102)
文摘A 4d-4f heterometallic coordination polymer, [AgNd(pydc)2].2H2O (1) (H2pydc=pyridine-3,4-dicarboxylic acid), was synthesized under hydrothermal conditions, and fimher characterized by elemental analysis, IR, thermogravimetric analysis and single-crystal X-ray dif- fraction. Complex 1 featured a three-dimensional (3D) framework containing one-dimensional (1D) channels occupied by free water molecules, which was constructed from 1D inorganic heterometallic chains and linear pydc linkers. To our knowledge, complex 1 represented a rare example of 3D open-framework 4d-4f heterometallic coordination polymer. After removal of the water molecules fi'om complex 1, the remaining material had high thermal stability. Moreover, the near-infrared luminescent properties of 1 were also investigated in the solid state.