The title compound,[Zn(mppdc)(2,2-bpy)]n(1),is synthesized via the reaction of Zn(NO3)2 with 2,6-dimethyl-4-phenylpyridine-3,5-dicarboxylic acid(H2mppdc) and 2,2’-bipyridyl(2,2-bpy),and characterized by single crysta...The title compound,[Zn(mppdc)(2,2-bpy)]n(1),is synthesized via the reaction of Zn(NO3)2 with 2,6-dimethyl-4-phenylpyridine-3,5-dicarboxylic acid(H2mppdc) and 2,2’-bipyridyl(2,2-bpy),and characterized by single crystal X-ray diffraction,elemental analysis and infrared spectra.The complex crystallizes in triclinic system,space group P-1 with a=9.3820(13),b=12.0970(16),c=13.130(2) ,α=75.940(3),β=74.850(3),γ=72.670(2)°,V=1350.9(3) 3,Z=1,C50H38N6O8Zn2,M=981.60,Dc=1.207 g/cm3,F(000)=504 and μ(MoKα)=0.940 mm-1.The final R=0.0840 and wR=0.2256 for 4666 observes reflections with I>2σ(I),and R=0.1284 and wR=0.2455 for all data.X-ray diffraction studies reveal that the title compound has an interesting 3-D porous architecture with 4 void channels.展开更多
2,6-dimethyl-4-phenylpyridine-3,5-dicarboxylic acid(H2mppdc,H2L) is employed in coordination chemistry.Two metal-organic coordination polymers with a general formula of M2L2(4,4’-bpy)x(H2O)4-2x(M = Zn or Co,x=1 or 2)...2,6-dimethyl-4-phenylpyridine-3,5-dicarboxylic acid(H2mppdc,H2L) is employed in coordination chemistry.Two metal-organic coordination polymers with a general formula of M2L2(4,4’-bpy)x(H2O)4-2x(M = Zn or Co,x=1 or 2) are assembled from H2L,4,4’-bipyridine,zinc and cobalt salt under hydrothermal conditions,and characterized by single-crystal X-ray diffraction analyses.Of the crystal structures of title compounds,L ligands,limited in the environment from 4,4’-bipyridine,arrays in head-to-head and head-to-tail modes which are corresponding to the 1-D(1) and 3-D(2) polymeric structures respectively.Interesting disorders occur in the crystal lattice of compound 1.And compound 2 has a 3-D 42·610·83 topology.Solid-state H2L and 1 have expected photoluminescence at room temperature.展开更多
A new 3-D two-fold interpenetrated coordination polymer [Cd(SDC)(H2O)] has been synthesized by using the trans-4,4′-stilbenedicarboxylic acid(H2SDC) and Cd(NO3)2·6H2O under hydrothermal conditions,and characteri...A new 3-D two-fold interpenetrated coordination polymer [Cd(SDC)(H2O)] has been synthesized by using the trans-4,4′-stilbenedicarboxylic acid(H2SDC) and Cd(NO3)2·6H2O under hydrothermal conditions,and characterized.Single-crystal X-ray structural analysis indicates that the title compound crystallizes in a monoclinic lattice,P2/c with a=15.158(2),b=6.4390(15),c=7.1330(19),β= 91.937(2)°,Z=1,V= 695.8(3)3,Dc=1.888 Mg·m-3,F(000)=390,R1=0.0476,wR2=0.0935.The title compound has an interpenetrated(4,4) topology in which central Cd(II) has greatly distorted hexahedral geometry.There are two distinct double-strand helicates,and interpenetrated rhombic nanochannels in the 3-D open framework.Compound 1 exhibits expected strong luminescence at λmax=460 nm upon excitation at 392 nm.展开更多
Poly[（μ4-2,6-dimethylpyridine-3,5-dicarboxylato）dihydrate]diaqualead（II）] （1） exhi- bits a two-dimensional （2-D） layer structure in which the asymmetric unit contains one Pbn centre, one 2,6-dimethylpyridine-...Poly[（μ4-2,6-dimethylpyridine-3,5-dicarboxylato）dihydrate]diaqualead（II）] （1） exhi- bits a two-dimensional （2-D） layer structure in which the asymmetric unit contains one Pbn centre, one 2,6-dimethylpyridine-3,5-dicarboxylate （mpdc） ligand and two coordinated water molecules. Each Pbn ion is eight-coordinated and surrounded by eight O atoms from five different mpdc ligands and two terminal water molecules to furnish a distorted square antiprism coordination geometry. The infinite connection of the one-dimensional （1-D） [PbO4（H2O）2]n chains bridged by ligands forms the 2-D [Pb（mpdc）]n layer Structure. In 1, the layers further build up a three- dimensional （3-D） supramolecular architecture via interlaminar hydrogen bonds and π-π stacking.展开更多
Two mononuclear metal-organic complexes, [Co（Hmpdc）2（H2O）4]·4H2O 1 and [Ni（Hfmpdc）2（H2O）4]·6H2O 2, were prepared from 2,6-dimethylpyridine-3,5-dicarboxylic acid （Hzmpdc） and 4-furyl-2,6-dimethylpyr...Two mononuclear metal-organic complexes, [Co（Hmpdc）2（H2O）4]·4H2O 1 and [Ni（Hfmpdc）2（H2O）4]·6H2O 2, were prepared from 2,6-dimethylpyridine-3,5-dicarboxylic acid （Hzmpdc） and 4-furyl-2,6-dimethylpyridine-3,5-dicarboxylic acid （H2fmpdc） with M（NO3）2 salts, respectively, and characterized by single-crystal X-ray diffraction, elemental analyses, IR spectroscopy, and photoluminescent measurement. Complex 1 crystallizes in triclinic, space group P1 with a = 7.634（5）, b = 8.695（5）, c = 10.757（6）A, α = 69.647（7）, β = 69.957（8）, γ = 83.733（7）°, V = 628.9（7）A^3, Dc = 1. 561 g/cm^3,μ（MoKa） = 0.763 mm^-1, F（000） = 309, Z = 1, the final R = 0.0553 and wR = 0.1469 for 1909 observed reflections （Ⅰ 〉 2σ（Ⅰ））. Complex 2 crystallizes in monoclinic, space group P21/n with a = 9.5934（16）, b = 12.422（2）, c = 14.826（3） A, β = 105.201（2）°, V = 1705.0（5）A3, Dc = 1. 479 g/cm^3,μ（MoKa） = 0.655 mm^-1, F（000） = 796, Z = 2, the final R= 0.0351 and wR = 0.0889 for 2387 obsevved reflections （Ⅰ 〉 2σ（Ⅰ））. In the crystal structures of 1 and 2, diverse supramolecular motifs from 1-D chains/ladders to 3-D networks are constructed from corresponding distinct [M^Ⅱ（H2O）8] ion clusters as the second building units, respectively. The solid state compounds of 1 and 2 show similar photoluminescent spectra with emission maximum at ca.展开更多
A new metal-organic coordination polymer, [Ce（L1）（L2）（H2O）]2H2O （1, H2L1 = 2,6-dimethylpyridine-3,5-diearboxylie acid, H2L2 = （E）-2,6-dimethyl-4-styrylpyridine-3,5-dieerboxylie acid）, has been synthesized an...A new metal-organic coordination polymer, [Ce（L1）（L2）（H2O）]2H2O （1, H2L1 = 2,6-dimethylpyridine-3,5-diearboxylie acid, H2L2 = （E）-2,6-dimethyl-4-styrylpyridine-3,5-dieerboxylie acid）, has been synthesized and characterized by elemental analysis, IR, and X-ray single-crystal diffraction. Compound 1 crystallizes in trielinic, space group P1 and displays a two-dimensional coordination network structure. In 1, the relatively rare crossed ladders constructed by mixed ligands organize a 2-D grid with the topology of （426）2（48668）, and the layers further build up a 3-D supramoleeular architeetttre via interlaminar hydrogen bonds.展开更多
文摘The title compound,[Zn(mppdc)(2,2-bpy)]n(1),is synthesized via the reaction of Zn(NO3)2 with 2,6-dimethyl-4-phenylpyridine-3,5-dicarboxylic acid(H2mppdc) and 2,2’-bipyridyl(2,2-bpy),and characterized by single crystal X-ray diffraction,elemental analysis and infrared spectra.The complex crystallizes in triclinic system,space group P-1 with a=9.3820(13),b=12.0970(16),c=13.130(2) ,α=75.940(3),β=74.850(3),γ=72.670(2)°,V=1350.9(3) 3,Z=1,C50H38N6O8Zn2,M=981.60,Dc=1.207 g/cm3,F(000)=504 and μ(MoKα)=0.940 mm-1.The final R=0.0840 and wR=0.2256 for 4666 observes reflections with I>2σ(I),and R=0.1284 and wR=0.2455 for all data.X-ray diffraction studies reveal that the title compound has an interesting 3-D porous architecture with 4 void channels.
文摘2,6-dimethyl-4-phenylpyridine-3,5-dicarboxylic acid(H2mppdc,H2L) is employed in coordination chemistry.Two metal-organic coordination polymers with a general formula of M2L2(4,4’-bpy)x(H2O)4-2x(M = Zn or Co,x=1 or 2) are assembled from H2L,4,4’-bipyridine,zinc and cobalt salt under hydrothermal conditions,and characterized by single-crystal X-ray diffraction analyses.Of the crystal structures of title compounds,L ligands,limited in the environment from 4,4’-bipyridine,arrays in head-to-head and head-to-tail modes which are corresponding to the 1-D(1) and 3-D(2) polymeric structures respectively.Interesting disorders occur in the crystal lattice of compound 1.And compound 2 has a 3-D 42·610·83 topology.Solid-state H2L and 1 have expected photoluminescence at room temperature.
文摘A new 3-D two-fold interpenetrated coordination polymer [Cd(SDC)(H2O)] has been synthesized by using the trans-4,4′-stilbenedicarboxylic acid(H2SDC) and Cd(NO3)2·6H2O under hydrothermal conditions,and characterized.Single-crystal X-ray structural analysis indicates that the title compound crystallizes in a monoclinic lattice,P2/c with a=15.158(2),b=6.4390(15),c=7.1330(19),β= 91.937(2)°,Z=1,V= 695.8(3)3,Dc=1.888 Mg·m-3,F(000)=390,R1=0.0476,wR2=0.0935.The title compound has an interpenetrated(4,4) topology in which central Cd(II) has greatly distorted hexahedral geometry.There are two distinct double-strand helicates,and interpenetrated rhombic nanochannels in the 3-D open framework.Compound 1 exhibits expected strong luminescence at λmax=460 nm upon excitation at 392 nm.
基金Supported by the Science and Technology Projects of Chongqing Municipal Education Commission(KJ060805,KJ100602)Chongqing Normal University Scientific Research Foundation Project(10XLZ005,2011XLS30)
文摘Poly[（μ4-2,6-dimethylpyridine-3,5-dicarboxylato）dihydrate]diaqualead（II）] （1） exhi- bits a two-dimensional （2-D） layer structure in which the asymmetric unit contains one Pbn centre, one 2,6-dimethylpyridine-3,5-dicarboxylate （mpdc） ligand and two coordinated water molecules. Each Pbn ion is eight-coordinated and surrounded by eight O atoms from five different mpdc ligands and two terminal water molecules to furnish a distorted square antiprism coordination geometry. The infinite connection of the one-dimensional （1-D） [PbO4（H2O）2]n chains bridged by ligands forms the 2-D [Pb（mpdc）]n layer Structure. In 1, the layers further build up a three- dimensional （3-D） supramolecular architecture via interlaminar hydrogen bonds and π-π stacking.
基金supported by the NNSFC (No. 20701041)the Key Project of Chinese Ministry of Education (No. 208116)+1 种基金the Natural Science Foundation of CQ CSTC (No. 2007BB5228)the Scientific and Technological Project of CQEC (No. KJ080829).
文摘Two mononuclear metal-organic complexes, [Co（Hmpdc）2（H2O）4]·4H2O 1 and [Ni（Hfmpdc）2（H2O）4]·6H2O 2, were prepared from 2,6-dimethylpyridine-3,5-dicarboxylic acid （Hzmpdc） and 4-furyl-2,6-dimethylpyridine-3,5-dicarboxylic acid （H2fmpdc） with M（NO3）2 salts, respectively, and characterized by single-crystal X-ray diffraction, elemental analyses, IR spectroscopy, and photoluminescent measurement. Complex 1 crystallizes in triclinic, space group P1 with a = 7.634（5）, b = 8.695（5）, c = 10.757（6）A, α = 69.647（7）, β = 69.957（8）, γ = 83.733（7）°, V = 628.9（7）A^3, Dc = 1. 561 g/cm^3,μ（MoKa） = 0.763 mm^-1, F（000） = 309, Z = 1, the final R = 0.0553 and wR = 0.1469 for 1909 observed reflections （Ⅰ 〉 2σ（Ⅰ））. Complex 2 crystallizes in monoclinic, space group P21/n with a = 9.5934（16）, b = 12.422（2）, c = 14.826（3） A, β = 105.201（2）°, V = 1705.0（5）A3, Dc = 1. 479 g/cm^3,μ（MoKa） = 0.655 mm^-1, F（000） = 796, Z = 2, the final R= 0.0351 and wR = 0.0889 for 2387 obsevved reflections （Ⅰ 〉 2σ（Ⅰ））. In the crystal structures of 1 and 2, diverse supramolecular motifs from 1-D chains/ladders to 3-D networks are constructed from corresponding distinct [M^Ⅱ（H2O）8] ion clusters as the second building units, respectively. The solid state compounds of 1 and 2 show similar photoluminescent spectra with emission maximum at ca.
基金Supported by the National Natural Science Foundations of China (21071156,20971132)Science and Technology Projects of Chongqing Municipal Education Commission (KJ060805+1 种基金KJ100602)Chongqing Normal University Scientific Research Foundation Project (10XLZ005)
文摘A new metal-organic coordination polymer, [Ce（L1）（L2）（H2O）]2H2O （1, H2L1 = 2,6-dimethylpyridine-3,5-diearboxylie acid, H2L2 = （E）-2,6-dimethyl-4-styrylpyridine-3,5-dieerboxylie acid）, has been synthesized and characterized by elemental analysis, IR, and X-ray single-crystal diffraction. Compound 1 crystallizes in trielinic, space group P1 and displays a two-dimensional coordination network structure. In 1, the relatively rare crossed ladders constructed by mixed ligands organize a 2-D grid with the topology of （426）2（48668）, and the layers further build up a 3-D supramoleeular architeetttre via interlaminar hydrogen bonds.
