Synthesis and Crystal Structure of a Novel Cobalt（Ⅱ） Coordination Polymer with 1,2,4,5-Benzenetetracarboxylate

A novel cobalt（II） coordination polymer,[Co（BTEC）1/2]n 1,has been synthesized with Co（NO3）2·6H2O and 1,2,4,5-benzenetetracarboxylic acid （H4BTEC） by the hydrothermal method,and characterized by elemental analysis,IR and single-crystal X-ray diffraction. Crystallographic data for 1： C5HO4Co,Mr = 183.99,monoclinic,space group C2/c,a = 16.619（6）,b = 7.416（3）,c = 8.040（3）A,β = 90.612（4）°,V = 990.8（6） A^3,Z = 8,Dc = 2.467 g/cm^3,μ = 3.390 mm^-1,F（000） = 720,R = 0.0307 and wR = 0.0847 for 912 observed reflections （I 〉 2σ（I））. X-ray crystal structural analysis revealed that each Co（II） adopts a tetrahedral coordination mode to link four separate BTEC ligands via uniform monodentate carboxylate groups and each BTEC ligand possesses an 8-connected geometry to connect eight Co（II） ions. Complex 1 exhibits a rare （4,8）-connected net with （45.6）2（410.614.84） topology.     

Synthesis,Crystal Structure and Luminescent Properties of a 1D Loop-chain Coordination Polymer [Ag（3,3-pybz）（3,3-Hpybz）]n

A new coordination polymer, [Ag（3,3-pybz）（3,3-Hpybz）]n （1, 3,3-Hpybz = 3-pyri- din-3-yl-benzoic acid）, has been synthesized and characterized by elemental analysis, IR spectra, PXRD, and single-crystal X-ray diffraction. In complex 1, the Ag（1）ions are linked by the paired 3,3-pybz ligands to generate an infinite 1D loop chain, and further through π-π stacking interactions to form a 2D supramolecular architecture. Crystal data for 1： triclinic, space group P1, a = 10.2635（17）, b = 10.3041（12）, c = 10.8060（13） A, V= 1679.1（5）A3, α = 62.028（11）, β = 80.325（15）, γ = 78.738（14）°, Z = 2, C24H17AgN2O4, Mr = 505.27, Dc= 1.698 g/cm3, μ= 1.058 mm--, F（000） = 506, S = 1.012 and T = 293（2） K. The final R = 0.0293 and wR = 0.0667 for 3435 observed reflections with I〉 2a（/）, and R = 0.0350 and wR = 0.0688 for all data.     

Urothermal Synthesis,Crystal Structure,and Luminescent Property of a New Zn（II） Coordination Polymer Constructed from Terephalic Acid and 5-Methyl-1H-tetrazole Ligands

A new luminescent Zn（II） compound, [Zn（pbdc）0.5（mtz）（DMPU）]n （1,H2pbdc = terephthalic acid, Hmtz = 5-methyl-1H-tetrazole, DMPU = N,N＇-dimethylpropyleneurea）, has been urothermally synthesized and characterized by elemental analysis, IR, X-ray powder diffraction （PXRD） and single-crystal X-ray diffraction. The title compound crystallizes in orthorhombic Pbca space group with α = 17.2649（5）, b = 10.4680（3）, c = 17.4457（7） ？, V = 3152.94（18） ？3, C12H17N6O3Zn, Mr = 358.71, Z = 8, Dc = 1.511 g/cm3, F（000） = 1480, μ = 1.579 mm-1, the final R = 0.0379 and wR = 0.0971 for 2785 observed reflections （I 〉 2σ（I））. Single-crystal X-ray structural analysis reveals that compound 1 features a 2D undulated layer with a 3-connected hcb topology. Moreover, the luminescent properties of 1 have also been investigated in the solid-state at room temperature.     

Synthesis,Crystal Structure and Photoluminescence Property of a Ni（Ⅱ） Coordination Polymer with One-dimensional Double-sinusoidal Structure

A new coordination polymer [Ni(3-bpo)(m-bdc)(C2H5OH) 2]n(1,3-bpo = 2,5-bis(3-pyridyl) -1,3,4-oxadiazole,m-H2bdc = 1,3-benzenedicarboxylic acid) was solvothermally synthesi-zed and characterized by IR,TGA and single-crystal X-ray diffraction. The title complex crystalli-zes in the orthorhombic system,space group Pnma with a = 7.786(3) ,b = 17.253(6) ,c = 18.478(6) ,V = 2481.9(14) 3,Mr = 539.18,Dc = 1.443 g/cm3,Z = 4,R = 0.0353 and wR = 0.0589. The m-bdc and 3-bpo bridge two Ni(Ⅱ) ions through two carboxylate groups and two pyridyl groups forming a 1D infinite double-sinusoidal chain along the c axis. The photoluminescence of 1 shows a large red shift compared to that of free ligands in the solid state.     

Crystal Structure and Luminescent Properties of a Zn(Ⅱ) Coordination Polymer Assembled by Mixed-ligand

A Zn(Ⅱ) coordination polymer [Zn(NIP)(3,3'-bpt)]·H2O(1, NIP = 5-nitroisophthalate, 3,3'-bpt = 1H-3,5-bis(3-pyridyl)-1,2,4-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 H2 NIP 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.     

Synthesis and Crystal Structure of a New Two-dimensional Manganese Coordination Polymer： [Mn（L）（1,4-bdc）]

A new coordination polymer,[Mn(L)(1,4-bdc)] (L=11-fluoro-dipyrido[3,2-a:2,3-c]phenazine,1,4-bdc=benzene-1,4-dicarboxylate),has been synthesized through the hydrothermal method and characterized by elemental analysis,IR and single-crystal X-ray diffraction.It crystalli-zes in triclinic,space group P1 with a=9.7544(9),b=10.8254(10),c=11.5288(10),α=114.1300(10),β=96.6110(10),γ=105.0390(10)°,V=1038.62(16)3,Z=2,C 26 H 13 FMnN 4 O 4,M r=519.34,D c=1.661 g/cm 3,F(000)=526,μ(MoKa)=0.691 mm-1,R=0.0405 and wR=0.0977.The 1,4-bdc dianions link the neighboring Mn(II) atoms to yield a two-dimensional layer structure.The L ligands are attached on both sides of the layer.The π-π interactions between the L ligands of neighboring layers result in a three-dimensional supramolecular architecture.     

Synthesis and Crystal Structure of a One-dimensional Mn（Ⅱ） Coordination Polymer with 1,3-bis（4-pyridyl）propane

A new 1D zigzag chain coordination polymer, { [Mn（bpp）（bac）2]·（CHaCN）}n 1 （bpp = 1,3-bis（4-pyridyl）propane, Hbac = benzoylacetone）, has been synthesized and characterized by FT-IR spectroscopy, thermal analysis and X-ray single-crystal diffraction. In the molecular structure, all Mn atoms locate in an octahedral geometry. The guest CH3CN molecules are included in the 1D channels of the 3D packing structure of 1. Crystal data： C35H35MnNaO4, Mr = 616.60, monoclinic, space group P211c, a = 17.691（4）, b = 18,955（4）, c = 9.712（6） A, β = 93.91（3）°, V = 3249.31（1） A^3, Z = 4, Dc = 1.260 g/cm^3, F（000） = 1292, 20max = 54.9°, μ = 0.447 mm^-1, the final S = 1.020, R = 0.0693 and wR = 0.1497.     

Hydrothermal Synthesis and Crystal Structure of a New 2D Zinc（Ⅱ） Coordination Polymer with 2-Aminoethanesulfonic Acid

A new 2D Zn(Ⅱ) coordination polymer [Zn(TAU)2]n (1, HTAU=2-aminoethane- sulfonic acid) constructed by 2-aminoethanesulfonic acid ligand has been hydrothermally synthesized by the reaction of Zn(CH3COO)2 and 2-aminoethanesulfonic acid with a 1:2 mole ratio and characterized by single-crystal X-ray diffraction, elemental analysis, infrared spectroscopy and thermogravimetric analysis. Crystal structural analysis reveals it crystallizes in monoclinic, space group P21/c with a=8.672(4), b=6.523(3), c=9.134(5) , β=115.441(5)°, V=466.6(4) 3, Mr=313.65, Z=2, Dc=2.232 Mg·m-3, F(000) =320, μ(MoKα)=3.091 mm-1, the final R=0.0358 and wR=0.0919 for 2026 observed reflections with Ⅰ > 2σ(Ⅰ). In the structure, each zinc(Ⅱ) ion is coordinated in a slightly distorted octahedron, and each μ3-TAU– acts as a bridge to bond three neighboring Zn(Ⅱ) ions to form an infinite 2D network structure.     

Synthesis and Crystal Structure of a 1-D Chain Zinc（Ⅱ） Coordinated Polymer with N-p-Tolysulfonyl-glutamine

A novel coordination polymer {[Zn(ts-gln)(bipy)]3H2O}n (ts-glnH2=N-p-toly-sulfonyl-glutamine,bipy=2,2-bipyridine) has been prepared and structurally characterized by X-ray diffraction method. It crystallizes in orthorhombic,space group P212121 with a=8.2622(5),b=16.6244(10),c=18.2807(10) ,V=2510.9(3) 3,C22H28N4O8SZn,Mr=573.91,Z=4,Dc= 1.518 g/cm3,μ(MoKa)=1.115 mm-1,F(000)=1192,the final R=0.0262 and wR=0.0662 for 5691 independent reflections with Rint=0.0240. The zinc(Ⅱ) atom is coordinated by N(3) and N(4) atoms of a bipy molecule,two carboxylate O(1) and O(2A) and amino N(1) atoms of ts-gln ligands,resulting in a square-pyramidal geometry. The title complex consists of an infinite zigzag chain of zinc(Ⅱ) ions linked by the carboxylate of N-p-tolysulfonyl-glutamine.     

Synthesis,Structure and Photoluminescent Property of a New 2D Zn（Ⅱ） Coordination Polymer Constructed by Biphenyl-3,3＇,5,5＇-tetracarboxylate

A new 2D Zn(II) coordination polymer,[Zn(btc)0.5(phen)]n(1,H4btc = biphenyl-3,3',5,5'-tetracarboxylic acid,phen = 1,10-phenanthroline),has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction analysis,elemental analysis and IR spectro-scopy.Complex 1 crystallizes in the triclinic system,space group P1 with a = 7.6878(6),b = 10.3453(8),c = 10.9589(9) ,α = 113.3540(10),β = 90.5460(10),γ = 90.4280(10)°,V = 800.09(11) 3,Z = 2,Dc = 1.696 Mg.m-3,μ = 1.566 mm-1,F(000) = 414,the final R = 0.0359 and wR = 0.0778 for 2441 observed reflections with I > 2σ(I).Complex 1 has a 2D layered network containing dinuclear Zn(II) structural units.The 2D layers are further linked by the phen molecules through π-π stacking interactions into a 3D supramolecular framework.The photoluminescent property of 1 was also studied in the solid state at room temperature.     

Synthesis,Crystal Structure and Properties of a New Coordination Polymer Constructed with 3-（4-hydroxypyridinium-1-yl）phthalic Acid

A new nickel coordination polymer {[Ni(dpa)(bpe)(H2O)]2}n(1) has been hydro-thermally synthesized, and structurally characterized by UV spectroscopy, elemental analyses and single-crystal X-ray diffraction(H2dpa=3-(4-hydroxypyridinium-1-yl) phthalic acid, bpe=μ-1,2-di(4-pyridyl) ethylene). It crystallizes in the triclinic system, space group P1 with a=8.779(2), b=10.909(3), c=12.739(3), α=72.45(2), β=75.13(2), γ=86.47(2)°, V=1124.1(5) 3, Z=2, Mr=516.14, Dc=1.525 g/cm3, μ=0.912 mm-1, Rint=0.0532, F(000)=532, the final R=0.0523 and wR=0.1089 for 3949 observed reflections(I2σ(I)). The coordination around the Ni center is a distorted octahedron coordination geometry involving two protonated H2dpa ligands, two bpe ligands, and one coordinated H2O molecule. The dpa2- anion, as a bridging ligand, connects two Ni centers to form binuclear units, which are linked together by the bpe ligands to form two-dimensional layers, and the interlayer hydrogen bonding further extends the 2D sheet into a 3D supramolecular framework.     

Synthesis, Crystal Structure and Luminescent Property of a One-dimensional Zinc（Ⅱ） Complex

A metal-organic coordination polymer [Zn2(cbba)4(bix)2]n·nH2O (Hcbba = 2-(4′- chlorine-benzoyl)-benzoic acid, bix = 1,4-bis(imidazol-1-ylmethyl)-benzene) 1 has been hydrothermally synthesized and characterized by elemental analysis, IR, TG, fluorescence spectrum and single-crystal X-ray diffraction. Pale yellow crystals crystallize in the triclinic system, space group Pī, a = 10.2796(13), b = 17.636(2), c = 23.237(3), α = 105.046(2), β = 102.534(2), γ = 100.758(2)o, V = 3837.0(9)3, C84H59Cl4N8O13Zn2, Mr = 1660.93, Dc = 1.438 g/cm3, F(000) = 1702, Z = 2, μ(MoKα) = 0.835 mm-1, the final R = 0.0525 and wR = 0.1211 for 9129 observed reflections (I > 2σ(I)). The structure of 1 exhibits a one-dimensional chain-like structure and shows yellow luminescent property at room temperature.     

Synthesis,Crystal Structure and Fluorescent Properties of a 4-Fold Interpenetrating Zn(Ⅱ) Polymer

A new coordination polymer [Zn(isop)(bps)]n 1(H2isop=benzene-1,3-dicer-boxylic acid,bps=4,4'-dipyridyl sulfide) has been prepared and structurally characterized by X-ray diffraction method.It crystallizes in monoclinic,space group P21/n with a=12.1936(11),b=10.7720(9),c=13.0685(11),V=1709.0(3)3,C18H12N2O4SZn,Mr=417.76,Z=4,Dc=1.624g/cm3,S=1.046,F(000)=848,the final R=0.0305 and wR=0.0858 for 3085 independent reflections with Rint=0.0147.Single-crystal X-ray diffraction analyses reveal that 1 is a 4-fold interpenetrating diamondoid network.The zinc(Ⅱ) atom is coordinated by two nitrogen atoms of two bps and two carboxylate oxygen atoms of isop ligands,resulting in a tetrahedral geometry.     

Synthesis and Crystal Structure of a Novel Ca(Ⅱ) Coordination Polymer Containing Dipyridine Dicarboxylic Ligand

The novel alkaline metal complex Ca(BPDCH)2(1, BPDCH2 = 2,2'-bipyridine-5,5'-dicarboxylic acid) has been synthesized by the hydrothermal reaction of Ca(NO3)2·4H2O with 2,2'-bipyridine-5,5'-dicarboxylic acid. The molecular and crystal structures of complex 1 have firstly been characterized by FTIR, elemental analysis, and X-ray single-crystal diffraction. The 3D MOF structure of complex 1 was interpreted by the versatile binding modes-the intermolecular hydrogen bonds and π-π stacking interactions of 2,2'-bipyridine-5,5'-dicarboxylic acid ligand. The analysis results show complex 1 belongs to a coordination polymer with 3D MOF structure. The results of thermogravimetric analysis and solubility demonstrate complex 1 is a thermostable compound and does not dissolve in water and traditional organic solvents.     

Synthesis,Crystal Structure,Thermal Behavior and Photoluminescence of a Novel Two-dimensional Cd(Ⅱ) Coordination Polymer

A new coordination polymer, [Cd2(bptc)(L)2(H2O)2]·5H2O(1, L = 2-(2-chloro-6-fluorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline and H4 bptc = 3,3',4,4'-biphenyltetracarboxylic acid), has been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/n with a = 18.868(4), b = 7.2111(14), c = 19.464(4), β = 95.75(3)°, C54H31Cd2Cl2F2N8O15, Mr = 1365.57, V = 2635.0(9)3, Z = 2, Dc = 1.721 g/cm3, S = 1.034, μ(MoKα) = 0.995 mm–1, F(000) = 1358, R = 0.0501 and wR = 0.1076. In 1, each bptc anion bridges four Cd(II) atoms to form 2D layer structures, which are further extended by π-π stacking interactions into a 3D supramolecular architecture. The thermal behavior and luminescent properties of the compound have also been studied.     

Synthesis and Crystal Structure of a Novel Tetranuclear Zinc（Ⅱ） Coordination Polymer [Zn4（o-bda）4（p-pbim）4]n

A novel tetranuclear zinc（H） coordination polymer [Zn4（o-bda）a（p-pbim）4]n 1 （p-pbim = 4-pyridylbenzimidazole, o-bda2 = o-phenylenediacetic acid dianion） has been synthesized by a hydrothermal method and characterized by elemental analysis, IR and X-ray singlecrystal diffraction. The title complex crystallizes in monoclinic, space group of P21/n with α = 14.231（1）, b = 16.257（1）, c = 16.794（1） ]k, β = 100.26（1）°, V = 3823.1（2）A3, Z = 8, Dc = 1.573 g/cm^3,β = 1.321 mm^-1, F（000） = 1856, R = 0.0420 and wR = 0.111. The Zn（1） atom assumes a distorted trigonal bipyramidal geometry, involving three carboxyl O atoms from two different o-bda ligands and two N atoms from two p-pbim ligands. The Zn（2） atom is coordinated by two oxygens from two distinct bda2- anions and two nitrogen atoms from two p-pbim ligands to form a distorted tetrahedral geometry. The Zn（Ⅱ） atoms are alternately interlinked by o-bda ligands in bis-monodentate or chelating-bidentate and monodentate modes into one-dimensional undulate chains along axis c with the adjacent Zn…Zn distances of 8.32 and 8.47 A. Such neighboring chains are further extended into a 1D bi-chain structure with two different subrings A and B, which are 32- and 14-membered rings through interchain p-pbim ligands. There exists a 2D supramolecular network linked by intermolecular hydrogen-bonding interactions between the uncoordinated carboxylate 0（4） atom or coordinated carboxylate 0（7） atom and the uncoordinated imidazolyl N（2） and N（5） atoms with the O...N distances to be 2.695 and 2.807A.     

Hydrothermal Synthesis and Crystal Structure of a New Three-dimensional Co（II） Coordination Polymer Based on 2,3-Thiophenedicarboxylic Acid

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.     

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.     

Hydrothermal Synthesis and Crystal Structure of One 3D Coordination Polymer of Nickle （II） Achieved from 5-Iodo-isophthalic Acid Ligand

A new coordination polymer [Ni（L）（m-bix）（H2O）]n （1, H2L = 5-iodo-isophthalic acid, m-bix=1,3-bis（imidazol-1-ylmethyl）-benzene） has been synthesized by the hydrothermal method and characterized by IR, elemental analysis, powder XRD and single-crystal X-ray analysis. The crystal is of triclinic, space group Pī with a = 9.1638（3）, b = 10.2319（3）, c = 13.2463（4） ？, α = 80.1710（10）, β = 83.671（2）, γ = 70.3790（10）o,C22H19NiIN4O5, Mr = 605.02, V = 1150.85（6） ？3, Dc = 1.746 g/cm3, F（000） = 600, μ = 2.225 mm-1, S = 1.045 and Z = 2. The final R = 0.0388 and wR = 0.1257 for 5089 observed reflections with I 〉 2σ（I）. In the title complex, the M and P layers are arranged alternately to give a double-layer structure by the symmetry related hydrogen bonds, and these double-layers are further joined together to achieve a 2D supramolecular architecture through I···π interaction involving iodine atoms and imidazole rings. The thermal stability of the title complex was studied by thermal gravimetric （TG） and differential thermal analysis （DTA）.