Syntheses and Structures of Two New Cobalt Supramolecular Complexes, [Co（4,4＇-bipy）2（H2O）4]·[Co2（4,4＇-bipy）3（H2O）8]·2TST·2（4,4＇-bipy）·4H2O and [Co（4,4＇-bipy）2（H2O）4]DSNT·4,4＇-bipy

Two new cobalt（II） supramolecular complexes [Co（4,4＇-bipy）2（H2O）4]·[Co2（4,4＇-bipy）3（H2O）8]·2TST·2（4,4＇-bipy）·4H2O 1 and [Co（4,4＇-bipy）2（H2O）4]DSNT·4,4＇-bipy 2 based upon the assembly of Co（II）, 4,4＇-bipyridine （4,4＇-bipy） and two new multifunctional organic ligands, 2,4,6-tris（4-sulfophenyl- amino）-1,3,5-triazine （H3TST） and 2,4-bis（p-sulfanilato）-6-diethylamino-1,3,5-triazine （H2DSNT）, have been prepared by hydrothermal method and characterized by elemental analysis, IR spectrum, and single-crystal X-ray diffraction. The crystal structure of 1 is of monoclinic, space group P21/n with a = 13.599（4）, b = 18.988（6）, c = 22.995（7） A, β = 90.273（6）°, V = 5938（3）A^3, Z = 4, C56H59Co1.5N13O17S3, Mr = 1370.74, Dc = 1.533 g/cm^3, μ = 0.613 mm^-1, F（000） = 2842, GOOF = 1.018, the final R = 0.0796 and wR = 0.1498 for 9019 observed reflections with I 〉 2σ（I）. The crystal structure of 2 belongs to the monoclinic system, space group C2/c with a = 18.864（6）, b = 14.283（5）, c = 20.246（7）A, β = 107.799（6）°, V = 5194（3）A^3, Z = 4, C49H52CoN12O10S2, Mr = 1092.08, Dc = 1.397 g/cm^3, μ = 0.480 mm^-1, F（000） = 2276, GOOF = 1.059, the final R = 0.0665 and wR = 0.1900 for 4887 observed reflections with I 〉 2σ（I）. The results of X-ray crystal structure analysis revealed that complexes 1 and 2 exhibit layered supramolecular frameworks stabilized by electrostatic interactions, π-π interactions and hydrogen bonds.     

Synthesis, Crystal Structure and Electrochemical Properties of One-dimensional Chain Coordination Polymer [Co（Ⅱ）（C6H5CH=CHCOOH）2（4,4＇-bipy）（H2O）5]n

A one-dimensional chain coordination polymer [Co（Ⅱ）（C6H5CH--CHCOOH）2（4,4＇- bipy）（H20）5]n has been synthesized with cinnamylic acid, 4,4＇-bipy and cobaltous chloride as raw materials. Crystal data for this complex： monoclinic, space group P21/c, a = 1.1481（3）, b = 1.1230（2）, c = 1.1759（3） nm, β = 97.054（4）^o, V= 1.5046（6） nm^3, Mr= 617.50, Dc = 1.363 g/cm^3, Z = 2, ,u（MoKa） = 0.627 mm^-1, F（000） = 646, S = 1.062, R 0.0443 and wR = 0.1178. The crystal structure shows that two neighboring cobalt（ID ions are linked together by one 4,4＇-bipy, and the whole complex molecule adopts a one-dimensional chain structure. Each cobalt（H） ion is coordinated with two nitrogen atoms from two 4,4＇-bipy molecules and four oxygen atoms from four water molecules, giving a distorted octahedral coordination geometry. The electrochemical properties were analyzed by combining with the crystal structure.     

Synthesis,Structure, Electrochemistry and Fluorescence Properties of a One-dimensional Coordination Polymer {[ CdLu-（4,4＇-dps） ]2（H2O）2]＇（4＇abs ）2（H2O）2

A new cadmium（N） compound, {[ CdLu-（4,4＇-dps） ]2（H2O）2]＇（4＇abs ）2（H2O）2n 1 （4,4＇-dps = 4,4＇-dipyridylsulfide, 4-abs = deprotonated 4-amino benzenesulfonic acid）, has been synthesized and structurally characterized. It belongs to the orthorhombic system, space group Pbcn with a = 19.950（3）, b = 10.6381（13）, c = 18.055（2）A, V= 3831.8（8） A3, Z = 4, C32H36CdN6010S4, Mr = 905.31, F（000） = 1848, μ= 0.850 mm^-1, Dc = 1.569 Mg/m^3, the final R = 0.0238 and wR = 0.0589 for 3080 observed reflections with I 〉 2σ（I）. Complex I is a one-dimensional linear chain coordination polymer and the repeat unit is comprised of doubly charged cadmium complex cation, uncoordinated 4-aminobenzene sulfonate anions and water molecules. The cadmium（H） ion adopts a six-coordinate distorted octahedral geometry. Complex 1 is stabilized and linked into a three-dimensional layered structure through intermolecular O-H…O and N-H…O hydrogen bonds together with electrostatic force. The cyclic voltammograms and fluorescence spectrum of 1 were also measured. It shows one irreversible redox process and emits a very strong and sharp fluorescent band at about 341 nm.     

Hydrothermal Synthesis and Crystal Structure of a New One-dimensional Cobalt（Ⅱ） Complex with 2-Pyridinecarboxyic Acid and 4,4＇-Bipyridine Ligands

A new metal-organic coordination polymer [Co（2-pya）2（4,4＇-bipy）]2n-[（4,4＇- bipy）0.5· H2O]2n （2-pya = 2-pyridinecarboxylic acid, 4,4＇-bipy = 4,4＇-bipyridine） 1 has been hydrothermally synthesized and structurally characterized by elemental analysis, IR spectrum, TG and single-crystal X-ray diffraction. The complex crystallizes in tetragonal, space group I41/a with a = b = 22.719（2）, c = 10.710（2）/k, V = 5527.8（14） A3, C54H46N10Co2O10, Mr= 1112.87, Dc = 1.337 g/cm3,μ（MoKa） = 0.665 mm-1, F（000） = 2296, Z = 4, the final R = 0.0633 and wR = 0.1096 for 1261 observed reflections （I 〉 2σ（I））. It exhibits a one-dimensional chain-like structure constructed by mixed ligands of 2-pyridinedicarboxylic acid and 4,4＇-bipyridine.     

Hydrothermal Synthesis and Crystal Structure of a Novel Dinuclear Co（ Ⅱ ） Complex： [Co2（2,2＇-bpy）2（μ-L）e（L）2（μ-H2O）] （HL = 4-Chlorobenzoic Acid）

ABSTRACT A new 4-chlorobenzoic acid bridge Co（Ⅱ ） complex [[Co2（2,2＇-bpy）2（μ-L）e（L）2（μ-H2O）] （HL = 4-chlorobenzoic acid） has been obtained by hydrothermal synthesis, and X-ray single-crystal diffraction analysis shows that it crystallizes in the monoclinic system, space group C2/c with a = 22.537（5）, b = 16.212（3）, c = 15.306（3） A, β= 124.37（3）°, V= 4616.1（16）A3, Mr = 1070.45, Dc = 1.540 g/cm3, Z = 4, p = 1.012 mm-1, F（000） = 2176, the final R = 0.0338 and wR= 0.0810. The title complex is composed of dinuclear [Co2（2,2＇-bpy）2（μ-L）2（L）2（μ-HaO）] molecules. Each Co（Ⅱ ） atom is coordinated by two nitrogen atoms from one 2,2’-bipyridine ligand, three oxygen atoms from three 4-chlorobenzoic ions and another oxygen atom from one water molecule. The two Co（Ⅱ） atoms are connected by two 4-chlorobenzoic ions and one bridged water molecule. The dinuclear molecules are interlinked by hydrogen bond and π-π stacking interactions into a three-dimensional supramolecular network.     

Syntheses, Characterization and Crystal Structures of Two-dimensional 4,4＇-Bipyridyl Lead Halides, PbI2 （4,4＇-bpy） and PbBr2 （4,4＇-bpy）

Two-dimensional 4,4-bipyridyllead halides, Pbl2 (4,4‘-bpy) (1) and PbBr2 ( 4,4‘-bpy ) (2), were synthesized. The structures were determined by means of X-ray single crystal diffraction. The structure shows a distorted octahedral configuration with six-coordinated central lead atoms. In crystals 1 and 2, the molecules are packed in a two-dimensional network structure through bridging halide atoms and 4,4‘-bipyridine ligands between the adjacent lead atoms.     

Three Inorganic-organic Composite Polyoxotungstates： Syntheses,Characterization and Structures of [Cu（2,2＇-bpy）2]5[α-PW11.5Cu0.5O40]·2H2O, [Co（2,2＇-bpy）2（N3）2]4H3[α-PW12O40]·3H2O and [Cu（2,2＇-bpy）2（4,4＇-bpy）]2[α-GeW12O40]-4H2O

Three new inorganic-organic composite polyoxotungstates [Cu（2,2＇-bpy）2]5[α-PW11.5Cu0.5O40]·2H2O 1, [Co（2,2＇-bpy）2（N3）2]4H3[α-PW12O40]·3H2O 2 and [Cu（2,2＇-bpy）2（4,4＇-bpy）]2[α-GeW12O40]-4H2O 3 （2,2＇-bpy = 2,2＇-bipyridine, 4,4＇-bpy = 4,4＇-bipyridine） have been hydrothermally synthesized and structurally characterized. 1 crystallizes in the orthorhombic space group Pna21 with a = 27.847（3）, b = 21.597（2）, c = 20.1179（19）A, V= 12099（2）A^3, Z= 4, GOF= 1.038, R = 0.0427 and wR = 0.1035; 2 belongs to the triclinic space group P1^- with a = 12.31150（10）, b = 16.1954（4）, c = 19.36290（10）A, α = 99.366（11）, β =105.168（8）, γ = 111.836（8）°, V = 3309.98（9）A3, Z = l, GOF = 1.024, R = 0.0739 and wR = 0.2216; and 3 crystallizes in the monoclinic space group P21/n with a = 12.858（4）, b = 20.943（6）, c = 15.598（5）A, β = 102.338（5）°, V= 4103（2）A3, Z = 2, GOF = 1.026, R = 0.0557 and wR = 0.1316. The common structural features of 1-3 are that their molecular structures all consist of a saturated a-Keggin polyoxoanion and several discrete metal-organic moieties. Intriguingly, 2 and 3 are composed of metal-organic coordination moieties with two mixed ligands.     

Synthesis and Crystal Structure of [Cu3（dmpzm）4（μ-1, 3-dca）2（dca）4]·2H2O （dmpzm = 1,1＇-Methylenebis- （3,5-dimethyl-1H-pyrazole）, dca = dicyanamide）

The title compound, [Cu3（dmpzm）4（μ-1,3-dca）2（dca）4]·2H2O （dmpzm = 1,1＇-methylenebis（3,5-dimethyl-lH-pyrazole）, dca = dicyanamide） 1·2H2O, was synthesized via the reaction of CuCl2·2H2O with dmpzm and Na（dca）, and characterized by elemental analysis and IR spectra. 1·2H2O crystallizes in the monoclinic system, space group C2/m with a = 13.578（3）, b = 16.769（3）, c = 14.769（3） A, β = 104.10（3）° V = 3261.4（11） A^3, Z = 2, Dc = 1.466 g/cm^3, T = 153（2） K, C56H68N34O2Cu3, Mr = 1440.09, F（000） = 1490,μ（MoKa） = 1.040 mm^-1, S = 1.150, R = 0.0553 and wR = 0.1123 for 2744 observed reflections with I 〉 2σ（I）. The central copper atom is chelated by two dmpzm ligands and coordinated by two bridging dca anions, forming a slightly distorted octahedral geometry. The two external copper atoms adopt a square-pyramidal coordination geometry, coordinated by one chelating dmpzm ligand and one bridging and two terminal dca anions. Two intermolecular hydrogen bonding interactions result in the formation of a 2D （4,4） hydrogen-bonded network.     

配位聚合物[Mn（4，4＇-bpy）1．5（H2O）3]（ClO4）·（4，4＇-bpy）（L）·H2O的水热合成和晶体结构

The title compound, [Mn（4,4＇-bpy）1.5（H2O）3]（ClO4）＇（4,4＇-bpy）（L）·H2O（1）, where L=2,4,6-trimethylbenzoic acid, was synthesized and its crystal structure was determined by X-ray diffraction analysis. The crystal is of triclinic, space group P1 with a=2.929 9（6） nm, b=1.0364（2） nm, c=8.2220（1） nm, α=105.300（2）°,β=97.495（2）°,）,=91.118（2）°, V=1.884 0（4） nm^3, Z=2, Mr=780.10, Dc=1.375 g·cm^-3,μ=0.483 mm-1, F（000）=812, R=0.055 4, wR= 0.135 2. The Mn atoms are octahedrally coordinated by three N atoms of three 4,4＇-bipyridine ligands and three O atoms of water. The complex shows a one-dimensional chain structure bridged by water and 4,4＇-bipyridine molecules. CCDC： 615707.     

Synthesis, Crystal Structure and Magnetic Properties of a Cobalt（II） Coordination Polymer with 4,4＇-（Propane-2,2-diyl）dibenzoate and 4,4 ＇-Bis（1-imidazolyl）biphenyl

A novel coordination polymer, {[Co（CBA）（BIMB）0.5]＇H20}n （1, H2CBA = 4,4＇- （propane-2,2-diyl）dibenzoic acid, and BIMB = 4,4＇-bis（1-imidazolyl）biphenyl）, has been hydro- thermally prepared and characterized by IR spectroscopy, elemental analysis and single-crystal X-ray diffraction. The crystal is of monoclinic system, space group P2/c with a = 14.909（3）, b = 7.1963（15）, c = 24.592（5） A, β = 104.312（2）, V = 2556.5（9） A3, C26H23N2OsCo, Mr = 502.39, Dc = 1.305 g/cm3, F（000） = 1040,μ = 0.708 mm-1 and Z = 4. The final R= 0.0580 and wR = 0.1605 for 3228 observed reflections （1 〉 2a（I））. Single-crystal structure analysis shows that complex 1 exhibits a three-dimensional 2-fold interpenetrating pillared helical-layer open framework of a-Po topology based upon binuclear paddlewheel units. Moreover, its magnetic properties have also been investigated.     

Synthesis and Crystal Structure of Cobalt(II) Complex [Co(H2O)2(bpe)(OAc)2](4,4''-dpdo

The reaction of Co(OAc)2 with bpe and 4,4'-dpdo in an aqueous-alcohol solution affords the formation of red crystals of [Co(H2O)2(bpe)(OAc)2](4,4'-dpdo (bpe = trans-1,2-bis(4- pyridyl)ethylene, 4,4'-dpdo = 4,4'-dipyridyl N,N'-oxide). The molecular and crystal structures were determined by single-crystal X-ray diffraction. The crystal is of triclinic, space group P with a = 7.6146(9), b = 8.6691(11), c = 10.344011 A, α = 88.311(3), β = 76.992(3), γ = 75.809(3)°, V = 644.7613 A3, Z = 1, C26H28CoN4O8, Mr = 583.45, Dc = 1.503 g/cm3, μ = 0.724 mm-1, F(000) = 303, T = 223(2) K, the final R = 0.0477 and wR = 0.1177 for 3199 observed reflections with I > 2σ(I). In the crystal the cobalt atom is six-coordinated by oxygen atoms from two carboxylic molecules, two nitrogen atoms from the bpe ligands and two water molecules, completing an octahedral geometry. The structure of the title complex consists of neutral chains containing cobalt(II) ions bridged by mutually trans bpe molecules. The adjacent chains are connected through weak hydrogen bonds to form a two-dimensional structure.     

Novel hydrogen-bonded three-dimensional networks encapsulating one-dimensional covalent chains: [M(4,4'-bipy)(H2O)(4)](4-abs)(2).nH2O (4,4'-bipy = 4,4'-bipyridine; 4-abs = 4-aminobenzenesulfonate) (M = Co,n = 1; M = Mn,n = 2)

Two novel compounds, [Co(4,4'-bipy)(H(2)O)(4)](4-abs)(2).H(2)O (1) and [Mn(4,4'-bipy)(H(2)O)(4)](4-abs)(2).2H(2)O (2) (4,4'-bipy = 4,4'-bipyridine; 4-abs = 4-aminobenzenesulfonate), have been synthesized in aqueous solution and characterized by single-crystal X-ray diffraction, elemental analyses, UV-vis and IR spectra, and TG analysis. X-ray structural analysis revealed that 1 and 2 both possess unusual hydrogen-bonded three-dimensional (3-D) networks encapsulating one-dimensional (1-D) covalently bonded infinite [M(4,4'-bipy)(H(2)O)(4)](2+) (M = Co, Mn) chains. The 4-abs anions in 1 form 1-D zigzag chains through hydrogen bonds. These chains are further extended through crystallization water molecules into 3-D hydrogen-bonded networks with 1-D channels, in which the [Co(4,4'-bipy)(H(2)O)(4)](2+) linear covalently bonded chains are located. Crystal data for 1: C(22)H(30)CoN(4)O(11)S(2), monoclinic P2(1), a = 11.380(2) A, b = 8.0274(16) A, c = 15.670(3) A, alpha = gamma = 90 degrees, beta = 92.82(3) degrees, Z = 2. Compound 2 contains interesting two-dimensional (2-D) honeycomb-like networks formed by 4-abs anions and lattice water molecules via hydrogen bonding, which are extended through other crystallization water molecules into three dimensions with 1-D hexagonal channels. The [Mn(4,4'-bipy)(H(2)O)(4)](2+) linear covalent chains exist in these channels. Crystal data for 2: C(22)H(32)MnN(4)O(12)S(2), monoclinic P2(1)/c, a = 15.0833(14) A, b = 8.2887(4) A, c = 23.2228(15) A, alpha = gamma = 90 degrees, beta = 95.186(3) degrees, Z = 4.     

Hydrothermal syntheses, crystal structures, and properties of a novel class of 3,3',4,4'-benzophenone-tetracarboxylate (BPTC) polymers

Three novel BPTC complexes, (H(2)BPTC)(4,4'-H(2)bpy)H(2)O (1), [Cd(2)Cu(HBPTC)(2)(mu(2)-4,4'-bpy)(2)(4,4'-bpy)(2)(H(2)O)(2)](n) (2), and [Co(3)(HBPTC)(2)(mu(2)-4,4'-bpy)(3)(H(2)O)(4)](n).2nH(2)O (3) (BPTC = 3,3',4,4'-benzophenone-tetracarboxylate and bpy = bipyridine), were hydrothermally synthesized. Complex 1, which is obtained as a coproduct during the syntheses of complexes 2 and 3, features a 2-D layered strong hydrogen bonding network with 2-fold interpenetration. Complex 2 has an unusual 2-D double-layered motif, which is linked together by Cu atoms in a face-to-face manner. It exhibits nanosized channels filled by 4,4'-bpy ligands. Three six-coordinated Co atoms in 3 are interlinked by HBPTC ligands to form a 2-D grid structure, which is further sustained by rigid 4,4'-bpy ligands into a 3-D open framework similar to CdSO(4) with the BPTC moieties situated in the tunnels. The thermal stabilities of complexes 1-3 were examined. The photoluminescence properties of complexes 1-2 and temperature-dependent magnetic susceptibility for 3 were also studied.     

Synthesis and Crystal structure of Poly{[Co(4,4''-bpy)(H2O)4]SO4((4-abaH)2(3H2O}

The title complex has been obtained by the reaction of cobalt sulfate heptahydrate with 4,4'-bpy and 4-abaH (4,4'-bpy = 4,4'-bipyridine, 4-abaH = 4-aminobenzonic acid) in ethanol solution, and its structure was determined by X-ray crystallography with the following data: tetragonal, space group P42/n, Mr = 5692.46, Co8C192H288N32O120S8, a = b = 16.402(5), c = 22.750(5) (A), Z = 1, V = 6120(2) (A)3, F(000) = 2968, Dc = 1.544 g/cm3,μ = 0.707 mm- 1, the final R = 0.0786 and wR = 0.1935 for 2673 observed reflections (I ＞ 2σ(I)). The title complex consists of polymeric [Co(4,4'-bipy)(H2O)4]2+ cation chains, SO42- anions, lattice 4-abaH and water mole cules. The center CoⅡ ions are connected by bridging 4,4'-bpy ligands exhibiting one-dimensional chains, and coordinated by four water molecules into a distorted octahedral geometry. These chains are further extended by hydrogen bonds among SO42- anions, coordinated and lattice water molecules as well as lattice 4-abaH molecules into a three-dimensional network.     

Hydrothermal Synthesis, Crystal Structure and Magnetic Properties of a Novel Cobalt Complex Based on Biphenyl-3,3'',4,4''-tetracarboxylate

A novel cobalt complex,[Co2(bptc)(bix)1.5](1,H4bptc=3,3',4,4'-biphenyltetra-carboxylic acid,bix = 1,4-bis(imidazol-1-ylmethyl)benzene),has been hydrothermally prepared and characterized by IR spectroscopy,elemental analysis and single-crystal X-ray diffraction.The crystal is of triclinic system,space group P1 with a=10.770(7),b=12.245(8),c=13.514(9),α=102.829(8),β=107.734(8),γ=98.833(9)°,C37H27N6O8Co2,Mr=801.51,V=1607.5(18)3,Dc=1.656g/cm3,F(000)=818,μ=1.100mm-1,Z=2,the final R = 0.0694 and wR = 0.1543 for...     

Crystal Structure,Thermal Behavior and Luminescence of a One-dimensional Coordination Polymer [Zn（4-CPOA）（Phen）（H2O）]n

A novel coordination polymer of [Zn（4-CPOA）（Phen）（H2O）]n （C21H16N2O6Zn,1,4-CPOA = 4-carboxylato-phenoxyacetate dianion and Phen = 1,10-phenanthroline） has been synthesized and characterized by elemental analysis,IR,TG,PL and single-crystal X-ray diffraction. The crystal crystallizes in the triclinic system,space group of P1 with a = 9.622（3）,b = 9.631（3）,c = 11.526（4）A,α = 67.719（5）,β = 71.203（5）,γ = 83.552（6）o,V = 935.5（5） A^3,Z = 2,Dc = 1.625 g/cm^3,μ = 1.357 mm^-1 and F（000） = 468. The Zn（II） ion is surrounded by three carboxylate O atoms from two different 4-CPOA groups,two N atoms from the Phen ligand and one water molecule,forming a distorted octahedral coordination configuration. The Zn（II） ions were alternately interlinked by carboxylate groups of 4-CPOA with chelating bisbidentate and monodentate modes into a one-dimensional zigzag chain having an intrachain distance of ca. 9.631（1） . Under the direction of supramolecular recognition and attraction,the adjacent chains yield a double-stranded chain through π-π stacking between the phen ligands,which was further expanded into a 2-D framework via strong C–H–π interaction （ca. 2.95（1） ） between the 4-CPOA ligands and into a 3-D supramolecular network by strong hydrogen bond between terminal water molecule and carboxyl group. TG/DTG shows that its chain skeleton is thermally stable up to 419 oC and the blue fluorescent emission of the complex was determined at 471 nm in a solid state with its long decay lifetime of 1.83 ns.     

Synthesis, Crystal Structure and Electrochemical Properties of One-dimensional Chain Coordination Polymer [Co(Ⅱ)(C6H5CH=CHCOOH)2(4,4''-bipy)(H2O)5]n

A one-dimensional chain coordination polymer [Co(Ⅱ)(C6H5CH=CHCOOH)2(4,4'-bipy)(H2O)5]n has been synthesized with cinnamylic acid, 4,4'-bipy and cobaltous chloride as raw materials. Crystal data for this complex: monoclinic, space group P21/c, a - 1.1481(3), b =1.1230(2), c = 1.1759(3) nm, β = 97.054(4)°, V = 1.5046(6) nm3, Mr= 617.50, Dc = 1.363 g/cm3, Z= 2, μ(MoKα) = 0.627 mm-1, F(000) = 646, S = 1.062, R 0.0443 and wR = 0.1178. The crystal structure shows that two neighboring cobalt(Ⅱ) ions are linked together by one 4,4'-bipy, and the whole complex molecule adopts a one-dimensional chain structure. Each cobalt(Ⅱ) ion is coordinated with two nitrogen atoms from two 4,4'-bipy molecules and four oxygen atoms from four water molecules, giving a distorted octahedral coordination geometry. The electrochemical properties were analyzed by combining with the crystal structure.     

Synthesis and Crystal Structure of [Cd(NBA)(μ_3-OH)(4,4′-bipy)_(1/2)]_n

A new cadmium polymer [Cd(NBA)(μ3-OH)(4,4′-bipy)1/2]n 1 (NBA = m-nitrobenzoic acid and 4,4′-bipy = 4,4-bipyridine) has been synthesized by hydrothermal reaction. Its structure was determined by single-crystal X-ray diffraction method, and characterized by elemental analysis and IR spectrum. The crystal is of monoclinic, space group C2/c, with a = 15.6912(9), b = 25.9394(15), c = 6.7332(4) ′, β = 114.7700(10)°, V = 2488.4(3) 3, C12H9CdN2O5, Mr = 373.61, Z = 8, Dc = 1.995 g/cm3, μ = 1.776 mm-1, F(000) = 1464, R = 0.0411 and wR = 0.1128 for 2130 observed reflections (I > 2σ(I)). X-ray diffraction studies reveal that the compound features a layered structure, in which 4,4′-bipy ligands bridge Z type of double chains [Cd(μ3-OH)]n and NBA ligands locate at the two sides of the layer. The π-π interactions between the benzene rings of NBA ligands of two adjacent layers lead to the 3D framework.     

Synthesis, Crystal Structure and Electrochemical Properties of One-dimensional Chain Coordination Polymer [Co(II)(C_6H_5CH=CHCOOH)_2(4,4′-bipy)(H_2O)_5]_n

A one-dimensional chain coordination polymer [Co(II)(C6H5CH=CHCOOH)2(4,4′- bipy)(H2O)5]n has been synthesized with cinnamylic acid, 4,4′-bipy and cobaltous chloride as raw materials. Crystal data for this complex: monoclinic, space group P21/c, a = 1.1481(3), b = 1.1230(2), c = 1.1759(3) nm, β = 97.054(4)o, V = 1.5046(6) nm3, Mr= 617.50, Dc = 1.363 g/cm3, Z = 2, μ(MoKα) = 0.627 mm-1, F(000) = 646, S = 1.062, R 0.0443 and wR = 0.1178. The crystal structure shows that two neighboring cobalt(II) ions are linked together by one 4,4′-bipy, and the whole complex molecule adopts a one-dimensional chain structure. Each cobalt(II) ion is coordinated with two nitrogen atoms from two 4,4′-bipy molecules and four oxygen atoms from four water molecules, giving a distorted octahedral coordination geometry. The electrochemical properties were analyzed by combining with the crystal structure.     

Synthesis, crystal structure and magnetic property of a three-dimensional cagelike polymer [Co(4,4''''-bpy)(NCS)_2(py)_2]_n

A new organic-inorganic hetero-coordination polymer with three different kinds of ligands [Co(4,4'-bpy)(NCS)2(py)2]n is synthesized in the extremely mild condition. The X-ray diffraction reveals that the title polymer has a highly tactic three-dimensional cagelike supramolecular structure. Although the coordination bond makes it a one-dimension chain, the hydrogen bond plays an important role in the formation of 3-D supramolecular frameworks. The determination of magnetic properties has been carried out, and shows that it behaves weak antiferromagnetic property with J(4,4'-bpy) = -3.8 cm-1.