Two new coordination polymers containing rigid bis（triazole）, namely, [Ni（btb）_（0.5）（nph）（H_2O）]_n（1） and [Zn（btb）（SO_4）]_n（2）（btb = 4,4a-bis（1,2,4-triazolyl-1-yl）-biphenyl, H_2nph = 3-nitrophthal...Two new coordination polymers containing rigid bis（triazole）, namely, [Ni（btb）_（0.5）（nph）（H_2O）]_n（1） and [Zn（btb）（SO_4）]_n（2）（btb = 4,4a-bis（1,2,4-triazolyl-1-yl）-biphenyl, H_2nph = 3-nitrophthalic acid） have been synthesized and characterized by elemental analysis, IR spectra, and single-crystal X-ray diffraction. Complex 1 shows a 3D trinodal（3,4,4）-connected sqc69 topology. Complex 2 presents a 2D uninodal 4-connected sql network, which is further packed into a 3D supramolecular framework by C-H···O hydrogen bonds. Thermal stabilities and fluorescence properties of two complexes have been discussed in detail.展开更多
A new metal-organic coordination polymer [Zn（hfipbb）（e-urea）]n（1,H2hfipbb = 4,4＇-（hexafluoroisopropylidene）bis（benzoic acid）,e-urea = ethylene urea） has been urothermally synthesized and characterized by el...A new metal-organic coordination polymer [Zn（hfipbb）（e-urea）]n（1,H2hfipbb = 4,4＇-（hexafluoroisopropylidene）bis（benzoic acid）,e-urea = ethylene urea） has been urothermally synthesized and characterized by elemental analysis and single-crystal X-ray diffraction.The title complex crystallizes in monoclinic,space group P21/c with a = 13.302（4）,b = 10.981（3）,c = 13.804（4） ,β = 93.587（5）°,V = 2012.3（10） 3,C20H14N2O5F6Zn,Mr = 541.72,Z = 4,Dc = 0.447 g/cm3, = 0.328 mm-1,F（000） = 272,R = 0.0340 and wR = 0.1107 for 4528 observed reflections（I 〉2σ（I））.In the structure of compound 1,two Zn（Ⅱ） ions are bridged by two carboxylate groups from two hfipbb ligands to form a dinuclear unit,and each dinuclear Zn（Ⅱ） unit is linked with its two adjacent dinuclear units through four hfipbb ligands into an infinite one-dimensional double-chain.The interesting structural feature of compound 1 is that the one-D double-chains are self-interconnected into a three-D supramolecular structure through hydrogen bonds between the coordinated e-urea molecules and carboxylate oxygen atoms（N1 and O2,N2 and O4）.展开更多
A novel coordination polymer {[Zn2（pda）2（bmp）1.5]·2H2O}n（1, H2 pda = 1,4-phenyl enediacetic acid and bmp = 1,4-bis（2-methy limidazol-3-ium-1-yl）biphenyl） was synthesized under hydrothermal conditions and ...A novel coordination polymer {[Zn2（pda）2（bmp）1.5]·2H2O}n（1, H2 pda = 1,4-phenyl enediacetic acid and bmp = 1,4-bis（2-methy limidazol-3-ium-1-yl）biphenyl） was synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectroscopy and powder X-ray diffraction（PXRD）. Complex {[Zn2（pda）2（bmp）1.5]·2H2O}n（1） is of triclinic system, space group P1 with a = 10.132（5）, b = 11.854（5）, c = 18.784（5） A, α = 80.256（5）, β = 75.163（5）, γ = 75.620（5）°, Z = 2, V = 2099.0（15） A3, Mr = 908.54, Dc = 1.437 g/cm^3, F（000） = 938 and μ = 1.206 mm-1. The final R = 0.0541 and wR = 0.1397 for 8017 observed reflections with I 2σ（I）. Complex 1 displays a three-dimensional（3D） self-interpenetrated 6-connected topological net with point symbol（48.67）. Furthermore, the luminescent property of complex 1 was investigated in the solid state at room temperature.展开更多
The reaction of L-histidine, CdCl22.5H2O and 4,4-bipyridine in methane/water gave rise to a two-dimensional coordination polymer [CdCl2(4,4-bipyridine)] which has been characterized by single-crystal X-ray diffraction...The reaction of L-histidine, CdCl22.5H2O and 4,4-bipyridine in methane/water gave rise to a two-dimensional coordination polymer [CdCl2(4,4-bipyridine)] which has been characterized by single-crystal X-ray diffraction. The polymer crystallizes in the orthorhombic sys- tem, space group Cmmm with a = 12.083(7), b = 11.771(7), c = 3.781(2) ? V = 537.8(6) ?, Z = 2, C10H8N2CdCl2, Mr = 339.48, Dc = 2.097 g/cm3, F(000) = 328 and (MoK? = 2.490 mm-1. The final R = 0.0658 and wR = 0.1398 for 257 observed reflections with I≥2(I).展开更多
Two zinc（Ⅱ） compounds, [Zn（L）（H2O）2]n 1 and [Zn（4,4＇-bpy）（H2O）4]（L） 2 （H2L = trans,trans-1,3 butadiene 1,4-dicarboxylic acid）, were synthesized by hydrothermal methods and characterized by single-cryst...Two zinc（Ⅱ） compounds, [Zn（L）（H2O）2]n 1 and [Zn（4,4＇-bpy）（H2O）4]（L） 2 （H2L = trans,trans-1,3 butadiene 1,4-dicarboxylic acid）, were synthesized by hydrothermal methods and characterized by single-crystal X-ray diffraction analyses. Compound 1 crystallizes in monoclinic, space group C2/c with a=15.4970（16）, b = 5.4976（6）, c = 10.7113（12） A, β=96.298（6）°, C6H8O6Zn, Mr = 241.50, V = 907.06（17） A^3, Z = 4, D, = 1.768 g/cm^3, F（000） = 488,μ = 2.703 mm^-1, S = 1.060, the final R = 0.0256 and wR = 0.0660 for 968 observed reflections with Ⅰ 〉 2σ（Ⅰ）. Compound 2 crystallizes in triclinic, space group P1^- with a = 6.915（2）, b = 7.166（2）, c = 10.363（3） A, α = 73.250（4）, β = 84.429（4）, γ = 61.605（3）°, C16H2ON2O8Zn, Mr = 433.70, V = 432.1 （2） A^3, Z = 1, D, = 1.667 g/cm^3, F（000） = 224 and μ= 1.471 mm^-1, S = 1.118, the final R = 0.0486 and wR = 0.1077 for 1352 observed reflections with Ⅰ〉 2σ（Ⅰ）. Upon using the assembly strategy of combination of coordination polymer chains with intermolecular hydrogen bonds, three-dimensional frameworks of complexes 1 and 2 were formed.展开更多
Under solvothermal conditions, a new Zn（Ⅱ） coordination polymer, namely [（CH3）aNH]2[Zn（bpea）（bib）]＇2H20 （1, H2bpea = biphenylethene-4,4＂-dicarboxylate and bib = 1,4-bis（1-imidazolyl） benzene）, has been ...Under solvothermal conditions, a new Zn（Ⅱ） coordination polymer, namely [（CH3）aNH]2[Zn（bpea）（bib）]＇2H20 （1, H2bpea = biphenylethene-4,4＂-dicarboxylate and bib = 1,4-bis（1-imidazolyl） benzene）, has been synthesized with mixed organic ligands. Complex 1 is of monoclinic system, space group P2/c with a = 17.4680（13）, b = 6.0489（5）, c = 18.8144（10） A, V= 1753.9（2） A3, Z = 2, Mr = 668.05, Dc = 1.265 g/cm3, F（000） = 700 and/a = 0.749 mm-1. The final refinement gave R = 0.0519 and wR = 0.0667 for 3266 reflections with I 〉 20（/）. Single-crystal X-ray analysis reveals that complex 1 features a three-dimensional structure with a six-fold interpenetrating diamondoid net. Furthermore, the solid state luminescent property of 1 was investigated at room temperature in the solid state.展开更多
Two new Zn~Ⅱ coordination polymers,namely,[Zn L（o-bdc）]n（1） and [Zn L（mbdc）]_n·n H_2O（2）（L = 4？-（3-pyridyl）-3,2？：6？,3？？-terpyridine,H_2（o-bdc） = benzene-1,2-dicarboxylic acid,H_2（m-bdc） = be...Two new Zn~Ⅱ coordination polymers,namely,[Zn L（o-bdc）]n（1） and [Zn L（mbdc）]_n·n H_2O（2）（L = 4？-（3-pyridyl）-3,2？：6？,3？？-terpyridine,H_2（o-bdc） = benzene-1,2-dicarboxylic acid,H_2（m-bdc） = benzene-1,3-dicarboxylic acid）,were synthesized by hydrothermal methods. The crystal structures have been determined by single-crystal X-ray diffraction. Compound 1 crystallizes in monoclinic C2/c space group,with a = 28.016（2）,b = 11.3815（11）,c = 19.8071（17） ？,β = 133.961（2）°,V = 4546.2（7） ？3,Z = 8,Mr = 539.83,Dc = 1.577 Mg/m^3,μ = 1.127 mm-1,F（000） = 2208,the final R = 0.0426 and w R = 0.0986 for 2875 observed reflections with I 〉 2σ（I） and displays a 1D coordination chain. While compound 2 crystallizes in monoclinic C2/c space group,with a = 15.6003（14）,b = 11.9152（11）,c = 26.633（3） ？,β = 94.320（2）°,V = 4936.5（8） ？~3,Z = 4,M_r = 1115.67,Dc = 1.496 Mg/m^3,μ = 1.043 mm^（-1）,F（000） = 2272,the final R = 0.0499 and w R = 0.1342 for 2659 observed reflections with I 〉 2σ（I） and shows a classical 3D cds topological network with point symbol of {65.8}. Furthermore,thermal stability and luminescent properties of 1 and 2 have also been investigated.展开更多
A Zn（Ⅱ） coordination polymer [Zn（NIP）（3,3＇-bpt）].H20 （1, NIP = 5-nitroisophtha- late, 3,3＂-bpt = 1H-3,5-bis（3-pyridyl）-l,2,4-triazolate） has been synthesized by the hydrothermal reaction at 140 ℃ and str...A Zn（Ⅱ） coordination polymer [Zn（NIP）（3,3＇-bpt）].H20 （1, NIP = 5-nitroisophtha- late, 3,3＂-bpt = 1H-3,5-bis（3-pyridyl）-l,2,4-triazolate） has been synthesized by the hydrothermal reaction at 140 ℃ and structurally characterized by IR spectroscopy, X-ray diffraction, thermal analysis, single-crystal X-ray diffraction and luminescent properties. In complex 1, the zinc atom is five-coordinated with three carboxylate oxygen atoms from three H2NIP and two nitrogen atoms from two 3,3＇-bpt, respectively, forming a distorted trigonal bipyramidal geometry and showing a 1D chain structure, which is further bridged by NIP to form a 3D supramolecular network via self-assembly of hydrogen bonds.展开更多
A novel tetrazylphosphonate ligand, namely ethyl 4-（2-ethyl-2H-1,2,3,4-tetrazol-5-yl） benzylphosphonate（Et-L）, was designed and successfully achieved from p-cyano benzyl chloride, based on which a zinc coordinatio...A novel tetrazylphosphonate ligand, namely ethyl 4-（2-ethyl-2H-1,2,3,4-tetrazol-5-yl） benzylphosphonate（Et-L）, was designed and successfully achieved from p-cyano benzyl chloride, based on which a zinc coordination polymer（1） with a 2D layer structure has been hydrothermally synthesized and structurally characterized by elemental analysis, IR, TGA and X-ray single-crystal diffraction. The colorless block crystals of H_2L·H_2O were also obtained under the same hydrothermal conditions, which belongs to monoclinic system, space group P2_1/c with a = 13.3141（7）, b = 5.1650（3）, c = 21.9839（18） A, β = 115.307（5）°, V = 1366.69（15）A3, Z = 4, D_c = 1.391 mg/cm^（-3）, Mr = 349.58, F（000） = 600, R = 0.0748 and wR = 0.1917 for 2392 observed reflections（I 〉 2σ（I））. The colorless block crystals of complex 1（[Zn（L）（H_2O）]_n） also belong to monoclinic system, space group P2_1/c with a = 22.7464（10）, b = 6.0430（3）, c = 9.7704（4） ？, β = 92.525（4）°, V = 1341.70（10）A3, Z = 4, D_c = 1.731 mg/cm_（-3）, M_r = 349.58, F（000） = 712, R = 0.0596 and wR = 0.1688 for 2357 observed reflections（I 〉 2σ（I））. Only the oxygen atoms of phosphonic group are coordinated with the metal zinc probably because the hydrogen atom of tetrazole has been substituted by ethyl group. Photoluminescence properties of the complex are also investigated.展开更多
A new one-dimensional polymer, [Zn（SC6H4S）（1,3-DPA）]n （1, SC6H4S = 1,4-ben- zenedithiolate and 1,3-DPA = 1,3-diaminepropane）, has been synthesized and characterized by elemental analysis, PXRD, IR spectra, and s...A new one-dimensional polymer, [Zn（SC6H4S）（1,3-DPA）]n （1, SC6H4S = 1,4-ben- zenedithiolate and 1,3-DPA = 1,3-diaminepropane）, has been synthesized and characterized by elemental analysis, PXRD, IR spectra, and single-crystal X-ray diffraction. The complex crystallizes in triclinic system, space group P1, with a = 6.7119（1）, b = 9.0230（2）, c = 10.4943（2） A, a = 69.288（1）, β = 75.848（1）, ）, = 81.513（1）°, V= 575.123（19） A3, Dc = 1.615 g/cm^3, Z = 2, F（000） = 288; the final S = 1.070, R = 0.0234, and wR = 0.0551. The compound consists of an infinite zigzag chain formed by [Zn（1,3-DPA）]^2＋ units joined by SC6H4S ligands. Each chain interacts with neighboring chains via weak N-H…S hydrogen bonds to form an extended three-dimensional （3D） supramolecular network. The thermal and photoluminescent properties of 1 have also been investigated.展开更多
new coordination polymer {[Zn(CF3COO)2(C5H5ON)]·H2O}n was synthesized based on the reaction of zinc(Ⅱ) trifluoroacetate and 3-hydroxypyridine(C5H5ON) in methanol medium for the first time. The structure of the c...new coordination polymer {[Zn(CF3COO)2(C5H5ON)]·H2O}n was synthesized based on the reaction of zinc(Ⅱ) trifluoroacetate and 3-hydroxypyridine(C5H5ON) in methanol medium for the first time. The structure of the coordination polymer was confirmed by IR, 1H NMR, elemental analysis and thermal analysis. The crystal structure of the coordination polymer was also determined by X-ray single crystal diffraction. The crystal belongs to monoclinic system with space group P21/m, and crystallographic data of the coordination polymer are: a= 0.863 1(4) nm, b=0.717 7(3) nm, c=1.116 4(5) nm, α=γ=90°, β=107.542(6)°, V=0.659 4(5) nm3; Dc=2.037 g·cm-3; Z=2; F(000)=400; μ=1.969 mm-1. Zinc(Ⅱ) atom lies at the center of an octahedron formed by the coordination of zinc atom and six O atoms which come from four different trifluoroacetate ions and two different 3-hydroxypyridine molecules where each trifluoroacetate ion and 3-hydroxypyridine are coordinated to two different zinc ions to form coordination polymer. CCDC: 253909.展开更多
Two novel Cd(Ⅱ) coordination polymers, [Cd 2(C 10H 2O 8)\5(H 2O) 6] n (1) and [Cd 4(C 6H 4O 2N) 8(H 2O) 4] n (2) (C 10H 2O 8=1,2,4,5-benzenetetracarboxyl and C 6H 4O 2N=nicotinato), were hydrothermally synthesized an...Two novel Cd(Ⅱ) coordination polymers, [Cd 2(C 10H 2O 8)\5(H 2O) 6] n (1) and [Cd 4(C 6H 4O 2N) 8(H 2O) 4] n (2) (C 10H 2O 8=1,2,4,5-benzenetetracarboxyl and C 6H 4O 2N=nicotinato), were hydrothermally synthesized and characterized by X-ray diffraction of the single-crystal and fluorescence spectra. Complex 1 crystallizes in triclinic system, space group P1 with a=0.559 62(7) nm, b=0.777 58(6) nm, c=0.969 75(10) nm, α=111.981(5)°, β=101.649(6)°, γ=98.240(5)°, and Z=1. Final R=0.024 8(wR=0.078 5). Complex 2 belongs to orthorhombic system, space group Pbca with unit cell dimensions a=1.144 94(19) nm, b=1.209 69(6) nm, c=1.740 73(8) nm and Z=8. Final R=0.018 5(wR=0.034 8). Both the two complexes are coordination polymers with a two-dimensional infinite structure, the repeat unit is [Cd 2(C 10H 2O 8)(H 2O) 6] (1) and [Cd 4(C 6H 4O 2N) 8(H 2O) 4] (2) which are bridged by the ligands of 1,2,4,5-benzenetetracarboxyl(C 10H 2O 8) and nicotinato(NA), respectively. The two polymers show strong fluorescence with λ em=433 nm(λ ex=333 nm, 1) and λ em=423 nm(λ ex=330 nm, 2) in the solid state at room temperature. The emissions observed in the polymers are tentatively assigned to the ligands fluorescence(LLCT).展开更多
基金supported by the National Natural Science Foundation of China(No.51474086)Natural Science Foundation-Steel and Iron Foundation of Hebei Province(B2015209299)the Graduate Student Innovation Fund of North China University of Science and Technology(2015S13)
文摘Two new coordination polymers containing rigid bis（triazole）, namely, [Ni（btb）_（0.5）（nph）（H_2O）]_n（1） and [Zn（btb）（SO_4）]_n（2）（btb = 4,4a-bis（1,2,4-triazolyl-1-yl）-biphenyl, H_2nph = 3-nitrophthalic acid） have been synthesized and characterized by elemental analysis, IR spectra, and single-crystal X-ray diffraction. Complex 1 shows a 3D trinodal（3,4,4）-connected sqc69 topology. Complex 2 presents a 2D uninodal 4-connected sql network, which is further packed into a 3D supramolecular framework by C-H···O hydrogen bonds. Thermal stabilities and fluorescence properties of two complexes have been discussed in detail.
基金supported by the Natural Science Foundation of Fujian Province (No.2010J01029)the Foundation of Education Committee of Fujian Province (No.JB11002)
文摘A new metal-organic coordination polymer [Zn（hfipbb）（e-urea）]n（1,H2hfipbb = 4,4＇-（hexafluoroisopropylidene）bis（benzoic acid）,e-urea = ethylene urea） has been urothermally synthesized and characterized by elemental analysis and single-crystal X-ray diffraction.The title complex crystallizes in monoclinic,space group P21/c with a = 13.302（4）,b = 10.981（3）,c = 13.804（4） ,β = 93.587（5）°,V = 2012.3（10） 3,C20H14N2O5F6Zn,Mr = 541.72,Z = 4,Dc = 0.447 g/cm3, = 0.328 mm-1,F（000） = 272,R = 0.0340 and wR = 0.1107 for 4528 observed reflections（I 〉2σ（I））.In the structure of compound 1,two Zn（Ⅱ） ions are bridged by two carboxylate groups from two hfipbb ligands to form a dinuclear unit,and each dinuclear Zn（Ⅱ） unit is linked with its two adjacent dinuclear units through four hfipbb ligands into an infinite one-dimensional double-chain.The interesting structural feature of compound 1 is that the one-D double-chains are self-interconnected into a three-D supramolecular structure through hydrogen bonds between the coordinated e-urea molecules and carboxylate oxygen atoms（N1 and O2,N2 and O4）.
基金Supported by the Natural Science Foundation of Shandong Province(ZR2010CQ043 and ZR2011BL024)
文摘A novel coordination polymer {[Zn2（pda）2（bmp）1.5]·2H2O}n（1, H2 pda = 1,4-phenyl enediacetic acid and bmp = 1,4-bis（2-methy limidazol-3-ium-1-yl）biphenyl） was synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectroscopy and powder X-ray diffraction（PXRD）. Complex {[Zn2（pda）2（bmp）1.5]·2H2O}n（1） is of triclinic system, space group P1 with a = 10.132（5）, b = 11.854（5）, c = 18.784（5） A, α = 80.256（5）, β = 75.163（5）, γ = 75.620（5）°, Z = 2, V = 2099.0（15） A3, Mr = 908.54, Dc = 1.437 g/cm^3, F（000） = 938 and μ = 1.206 mm-1. The final R = 0.0541 and wR = 0.1397 for 8017 observed reflections with I 2σ（I）. Complex 1 displays a three-dimensional（3D） self-interpenetrated 6-connected topological net with point symbol（48.67）. Furthermore, the luminescent property of complex 1 was investigated in the solid state at room temperature.
基金This work was supported by the National Natural Science Foundation of China (No. 20231020)
文摘The reaction of L-histidine, CdCl22.5H2O and 4,4-bipyridine in methane/water gave rise to a two-dimensional coordination polymer [CdCl2(4,4-bipyridine)] which has been characterized by single-crystal X-ray diffraction. The polymer crystallizes in the orthorhombic sys- tem, space group Cmmm with a = 12.083(7), b = 11.771(7), c = 3.781(2) ? V = 537.8(6) ?, Z = 2, C10H8N2CdCl2, Mr = 339.48, Dc = 2.097 g/cm3, F(000) = 328 and (MoK? = 2.490 mm-1. The final R = 0.0658 and wR = 0.1398 for 257 observed reflections with I≥2(I).
基金This work was supported by the National Natural Science Foundation of China (No. 20231020)
文摘Two zinc（Ⅱ） compounds, [Zn（L）（H2O）2]n 1 and [Zn（4,4＇-bpy）（H2O）4]（L） 2 （H2L = trans,trans-1,3 butadiene 1,4-dicarboxylic acid）, were synthesized by hydrothermal methods and characterized by single-crystal X-ray diffraction analyses. Compound 1 crystallizes in monoclinic, space group C2/c with a=15.4970（16）, b = 5.4976（6）, c = 10.7113（12） A, β=96.298（6）°, C6H8O6Zn, Mr = 241.50, V = 907.06（17） A^3, Z = 4, D, = 1.768 g/cm^3, F（000） = 488,μ = 2.703 mm^-1, S = 1.060, the final R = 0.0256 and wR = 0.0660 for 968 observed reflections with Ⅰ 〉 2σ（Ⅰ）. Compound 2 crystallizes in triclinic, space group P1^- with a = 6.915（2）, b = 7.166（2）, c = 10.363（3） A, α = 73.250（4）, β = 84.429（4）, γ = 61.605（3）°, C16H2ON2O8Zn, Mr = 433.70, V = 432.1 （2） A^3, Z = 1, D, = 1.667 g/cm^3, F（000） = 224 and μ= 1.471 mm^-1, S = 1.118, the final R = 0.0486 and wR = 0.1077 for 1352 observed reflections with Ⅰ〉 2σ（Ⅰ）. Upon using the assembly strategy of combination of coordination polymer chains with intermolecular hydrogen bonds, three-dimensional frameworks of complexes 1 and 2 were formed.
基金Supported by the Joint Foundation between GZST and GZMU(LKM201305)the Natural Science Foundation of China(No.21363004)
文摘Under solvothermal conditions, a new Zn（Ⅱ） coordination polymer, namely [（CH3）aNH]2[Zn（bpea）（bib）]＇2H20 （1, H2bpea = biphenylethene-4,4＂-dicarboxylate and bib = 1,4-bis（1-imidazolyl） benzene）, has been synthesized with mixed organic ligands. Complex 1 is of monoclinic system, space group P2/c with a = 17.4680（13）, b = 6.0489（5）, c = 18.8144（10） A, V= 1753.9（2） A3, Z = 2, Mr = 668.05, Dc = 1.265 g/cm3, F（000） = 700 and/a = 0.749 mm-1. The final refinement gave R = 0.0519 and wR = 0.0667 for 3266 reflections with I 〉 20（/）. Single-crystal X-ray analysis reveals that complex 1 features a three-dimensional structure with a six-fold interpenetrating diamondoid net. Furthermore, the solid state luminescent property of 1 was investigated at room temperature in the solid state.
基金supported by the National Natural Science Foundation of China(Nos.21173164 and 21473133)
文摘Two new Zn~Ⅱ coordination polymers,namely,[Zn L（o-bdc）]n（1） and [Zn L（mbdc）]_n·n H_2O（2）（L = 4？-（3-pyridyl）-3,2？：6？,3？？-terpyridine,H_2（o-bdc） = benzene-1,2-dicarboxylic acid,H_2（m-bdc） = benzene-1,3-dicarboxylic acid）,were synthesized by hydrothermal methods. The crystal structures have been determined by single-crystal X-ray diffraction. Compound 1 crystallizes in monoclinic C2/c space group,with a = 28.016（2）,b = 11.3815（11）,c = 19.8071（17） ？,β = 133.961（2）°,V = 4546.2（7） ？3,Z = 8,Mr = 539.83,Dc = 1.577 Mg/m^3,μ = 1.127 mm-1,F（000） = 2208,the final R = 0.0426 and w R = 0.0986 for 2875 observed reflections with I 〉 2σ（I） and displays a 1D coordination chain. While compound 2 crystallizes in monoclinic C2/c space group,with a = 15.6003（14）,b = 11.9152（11）,c = 26.633（3） ？,β = 94.320（2）°,V = 4936.5（8） ？~3,Z = 4,M_r = 1115.67,Dc = 1.496 Mg/m^3,μ = 1.043 mm^（-1）,F（000） = 2272,the final R = 0.0499 and w R = 0.1342 for 2659 observed reflections with I 〉 2σ（I） and shows a classical 3D cds topological network with point symbol of {65.8}. Furthermore,thermal stability and luminescent properties of 1 and 2 have also been investigated.
基金Supported by the National Natural Science Foundattion of China(21101035)Natural Science Foundattion of Guangxi province(2012GXNSFBA053017)+1 种基金the Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources,Ministry of Education of China(CMEMR2013-A05)the Natural Science Foundation of Guangxi Normal University
文摘A Zn（Ⅱ） coordination polymer [Zn（NIP）（3,3＇-bpt）].H20 （1, NIP = 5-nitroisophtha- late, 3,3＂-bpt = 1H-3,5-bis（3-pyridyl）-l,2,4-triazolate） has been synthesized by the hydrothermal reaction at 140 ℃ and structurally characterized by IR spectroscopy, X-ray diffraction, thermal analysis, single-crystal X-ray diffraction and luminescent properties. In complex 1, the zinc atom is five-coordinated with three carboxylate oxygen atoms from three H2NIP and two nitrogen atoms from two 3,3＇-bpt, respectively, forming a distorted trigonal bipyramidal geometry and showing a 1D chain structure, which is further bridged by NIP to form a 3D supramolecular network via self-assembly of hydrogen bonds.
基金Support by National Natural Science Foundation of China(21371052)the Scientific Research Fund of Heilongjiang Provincial Education Department(12531512)
文摘A novel tetrazylphosphonate ligand, namely ethyl 4-（2-ethyl-2H-1,2,3,4-tetrazol-5-yl） benzylphosphonate（Et-L）, was designed and successfully achieved from p-cyano benzyl chloride, based on which a zinc coordination polymer（1） with a 2D layer structure has been hydrothermally synthesized and structurally characterized by elemental analysis, IR, TGA and X-ray single-crystal diffraction. The colorless block crystals of H_2L·H_2O were also obtained under the same hydrothermal conditions, which belongs to monoclinic system, space group P2_1/c with a = 13.3141（7）, b = 5.1650（3）, c = 21.9839（18） A, β = 115.307（5）°, V = 1366.69（15）A3, Z = 4, D_c = 1.391 mg/cm^（-3）, Mr = 349.58, F（000） = 600, R = 0.0748 and wR = 0.1917 for 2392 observed reflections（I 〉 2σ（I））. The colorless block crystals of complex 1（[Zn（L）（H_2O）]_n） also belong to monoclinic system, space group P2_1/c with a = 22.7464（10）, b = 6.0430（3）, c = 9.7704（4） ？, β = 92.525（4）°, V = 1341.70（10）A3, Z = 4, D_c = 1.731 mg/cm_（-3）, M_r = 349.58, F（000） = 712, R = 0.0596 and wR = 0.1688 for 2357 observed reflections（I 〉 2σ（I））. Only the oxygen atoms of phosphonic group are coordinated with the metal zinc probably because the hydrogen atom of tetrazole has been substituted by ethyl group. Photoluminescence properties of the complex are also investigated.
基金Supported by the National Natural Science Foundation of China(No.21301035)
文摘A new one-dimensional polymer, [Zn（SC6H4S）（1,3-DPA）]n （1, SC6H4S = 1,4-ben- zenedithiolate and 1,3-DPA = 1,3-diaminepropane）, has been synthesized and characterized by elemental analysis, PXRD, IR spectra, and single-crystal X-ray diffraction. The complex crystallizes in triclinic system, space group P1, with a = 6.7119（1）, b = 9.0230（2）, c = 10.4943（2） A, a = 69.288（1）, β = 75.848（1）, ）, = 81.513（1）°, V= 575.123（19） A3, Dc = 1.615 g/cm^3, Z = 2, F（000） = 288; the final S = 1.070, R = 0.0234, and wR = 0.0551. The compound consists of an infinite zigzag chain formed by [Zn（1,3-DPA）]^2＋ units joined by SC6H4S ligands. Each chain interacts with neighboring chains via weak N-H…S hydrogen bonds to form an extended three-dimensional （3D） supramolecular network. The thermal and photoluminescent properties of 1 have also been investigated.
文摘new coordination polymer {[Zn(CF3COO)2(C5H5ON)]·H2O}n was synthesized based on the reaction of zinc(Ⅱ) trifluoroacetate and 3-hydroxypyridine(C5H5ON) in methanol medium for the first time. The structure of the coordination polymer was confirmed by IR, 1H NMR, elemental analysis and thermal analysis. The crystal structure of the coordination polymer was also determined by X-ray single crystal diffraction. The crystal belongs to monoclinic system with space group P21/m, and crystallographic data of the coordination polymer are: a= 0.863 1(4) nm, b=0.717 7(3) nm, c=1.116 4(5) nm, α=γ=90°, β=107.542(6)°, V=0.659 4(5) nm3; Dc=2.037 g·cm-3; Z=2; F(000)=400; μ=1.969 mm-1. Zinc(Ⅱ) atom lies at the center of an octahedron formed by the coordination of zinc atom and six O atoms which come from four different trifluoroacetate ions and two different 3-hydroxypyridine molecules where each trifluoroacetate ion and 3-hydroxypyridine are coordinated to two different zinc ions to form coordination polymer. CCDC: 253909.
文摘Two novel Cd(Ⅱ) coordination polymers, [Cd 2(C 10H 2O 8)\5(H 2O) 6] n (1) and [Cd 4(C 6H 4O 2N) 8(H 2O) 4] n (2) (C 10H 2O 8=1,2,4,5-benzenetetracarboxyl and C 6H 4O 2N=nicotinato), were hydrothermally synthesized and characterized by X-ray diffraction of the single-crystal and fluorescence spectra. Complex 1 crystallizes in triclinic system, space group P1 with a=0.559 62(7) nm, b=0.777 58(6) nm, c=0.969 75(10) nm, α=111.981(5)°, β=101.649(6)°, γ=98.240(5)°, and Z=1. Final R=0.024 8(wR=0.078 5). Complex 2 belongs to orthorhombic system, space group Pbca with unit cell dimensions a=1.144 94(19) nm, b=1.209 69(6) nm, c=1.740 73(8) nm and Z=8. Final R=0.018 5(wR=0.034 8). Both the two complexes are coordination polymers with a two-dimensional infinite structure, the repeat unit is [Cd 2(C 10H 2O 8)(H 2O) 6] (1) and [Cd 4(C 6H 4O 2N) 8(H 2O) 4] (2) which are bridged by the ligands of 1,2,4,5-benzenetetracarboxyl(C 10H 2O 8) and nicotinato(NA), respectively. The two polymers show strong fluorescence with λ em=433 nm(λ ex=333 nm, 1) and λ em=423 nm(λ ex=330 nm, 2) in the solid state at room temperature. The emissions observed in the polymers are tentatively assigned to the ligands fluorescence(LLCT).
