A New 2D Zinc(Ⅱ) Coordination Polymer Constructed by Imidazole-4,5-dicarboxylic Acid(H_3IDC) and 1,4-Bis(imidazol-1-ylmethyl)-benzene(bix)

A new 2D Zn（Ⅱ） coordination polymer [Zn（HIDC）（bix）0.5]n（1） was obtained by the hydrothermal reaction of ZnCl2,imidazole-4,5-dicarboxylic acid（H3IDC） and 1,4-bis（imidazol-1-ylmethyl）-benzene（bix） with a 2：2：1 mole ratio.X-ray diffraction crystal structural analysis reveals it crystallizes in monoclinic,space group P21/n with a = 12.125（3）,b = 10.541（3）,c = 12.484（3） ,β = 115.834（4）°,V = 1436.0（6） 3,Mr = 338.60,Z = 4,Dc = 1.566 Mg·m-3,F（000） = 684,μ（MoKα） = 1.730 mm-1,the final R = 0.0439 and wR = 0.0888 for 2101 observed reflections with I ≥ 2σ（I）.In 1,each zinc（Ⅱ） ion is five-coordinated with a slightly distorted trigonal bipy-ramidal coordination geometry,and each μ2-HIDC2-acts as a bridge to bond two neighboring Zn（Ⅱ） ions,leading to a 1D zigzag chain architecture.The adjacent zigzag chains are further linked by μ2-bix to form an infinite 2D network structure.The fluorescence spectrum of 1 exhibits intense emission at 466 nm when excited at 397 nm in solid state at room temperature.

A New 1D Zinc Coordination Polymer Constructed by 1-Naphthylacetate and 4,4'-bpy:Synthesis,Structure and Luminescent Property

One new zinc coordination polymer,[Zn（NAA）2（4,4＇-bpy）]n（1,HNAA = 1-naphthaleneacetic acid,4,4＇-bpy = 4,4＇-bipyridine）,has been synthesized under hydrothermal conditions and characterized by elemental analysis,IR spectroscopy,thermogravimetric analysis（TGA）,and single-crystal X-ray diffraction.Coordination polymer 1 is of monoclinic system,space group Cc with a = 9.8720（6）,b = 16.7397（9）,c = 17.0371（12） ,β = 104.8080（10）°,V = 2721.9（3）3,C34H26N2O4Zn,Z = 4,Mr = 591.94,Dc = 1.444 g/cm3,μ（MoKα） = 0.946 mm-1,F（000） = 1224,the final R = 0.0282 and wR = 0.0720 for 3300 observed reflections with I 〉 2σ（I）.1 exhibits an interesting one-dimensional chain structure.Furthermore,the luminescent property of 1 has also been investigated.

A Two-dimensional Anthracene-9,10-dicarboxylate Zinc(Ⅱ) Coordination Polymer Based on Binuclear [Zn_2Cl_2] Nodes: Synthesis, Characterization and Luminescent Properties

A two-dimensional（2D） 44 topological ZnⅡ coordination polymer {[Zn2Cl2（L）（4bpy）2]}∞（H2L = anthracene-9,10-dicarboxylic acid, 4bpy = 4,4ˊ-bipyridine） based on binuclear [Zn2Cl2] nodes has been synthesized and characterized by IR, elemental analysis, X-ray powder diffraction and single-crystal X-ray diffraction analysis. Moreover, the luminescent properties of the correspon- ding compound have been briefly investigated.

Synthesis,crystal structure and adsorption properties of a novel Fe(Ⅲ) porous coordination polymer containing 1,4-naphthalenedicarboxylate ligand

A novel porous coordination polymer,iron naphthalenedicarboxylate Fe（OH）（1,4-NDC）·2H2O is hydrothermally synthesized by the reaction of FeSO4·7H2O and 1,4-naphthalenedicarboxylic acid（1,4-H2NDC） at 150℃.The compound crystallizes in a tetragonal space group P42/nmc：a=2.1447（4） nm,c=0.68849（14） nm,V=3.1669（11） nm3,Z=8,R=0.0845,wR=0.1829.The crystal structure exhibits a three-dimensional framework which is composed of infinite chains of corner-sharing octahedral Fe（OH）2O4 with 1,4-NDC ligands forming two types of channels with square-shaped cross-sections.The large channels present a cross-section of 0.76 nm×0.76 nm,while the small channels are about 0.30 nm×0.30 nm.No structural transformation occurs after removing the guest water molecules,while a robust structure generates with permanent porosity.The adsorption measurements show that the anhydrous sample of the compound can adsorb CO2 into its pores.The adsorption isotherms for methanol,acetone,tetrahydrofuran and benzene are also measured.

Synthesis, Structure and Luminescent Property of a Zinc(Ⅱ) Coordination Polymer Incorporating Flexible Cyclohexane-1,2,3,4,5,6-hexacarboxylate Ligand

The hydrothermal reaction of Zn（NO3）2·4H2O, cyclohexane-1,2,3,4,5,6-hexacarboxylic acid hydrate （H6LI·H2O, cis-conformation LI： a,e,a,e,a,e） and 2,2＇-bpy yielded a new coordination polymer [Zn2（H2LII）（2,2＇-bpy）]·2H2O（trans-conformation LII： e,e,e,e,e,e）, which was characterized by single-crystal X-ray diffraction, elemental analysis, IR and XRPD（X-ray powder diffraction）. This complex crystallized in the triclinic system, with P1 space group and parameters a=0.66922（5） nm, b=0.97291（8） nm, c=1.22184（9） nm, α=99.0020（10）°, β=99.1300（10）°, γ=99.1910（10）°, V= 0.76176（10） nm3 and Z=2. The structure is a three-dimensional supramolecular network based on linear coordination chains through π-π stacking and hydrogen bonding interactions. The confromation of the starting ligand H6LI transfromed to the H2LII. The complex emits strong luminescence at room temperature.

Syntheses,Structures and Characterizations of Two New Zinc(Ⅱ) Coordination Polymers Constructed from 3-(1H-Pyrazol-4-yl)-5-(pyridin-2-yl)-1,2,4-triazole and Different Carboxylate Ligands

Two new zinc（Ⅱ） coordination polymers, [Zn（ph）（H2 L）·H2O]2 n（1） and [Zn（ip）（H2 L）-（H2O）]n（2）（H2 ph = phthalic acid, H2 ip = isophthalic acid, H2L = 3-（1 H-pyrazol-4-yl）-5-（pyridin-2-yl）-1,2,4-triazole）, have been successfully synthesized via hydrothermal reaction. It has been structurally characterized by X-ray single-crystal analysis, IR spectra, fluorescence spectroscopy and thermogravimetry analysis. The single-crystal X-ray diffraction studies reveal that compounds 1 and 2 both exhibit 1D chain structures, and assemble into 2D and 3D supermolecules through hydrogen bonds or π-π interactions. Moreover, the thermal stability and luminescent properties of compounds 1 and 2 were also studied.

Synthesis, Crystal Structure and Photoluminescence of a Zn(Ⅱ) Coordination Polymer Derived from 1,1'-Biphenyl-2,2',6,6'-tetracarboxylic Acid

A new polymeric znic（II） coordination polymer, [Zn2（bptc）·（H2O）4]n·nC H3 OH 1, was synthesized by the hydrothermal reaction of Zn（NO3）2·6H2O with 1,1＇-biphenyl-2,2＇,6,6＇-tetracarboxylic acid（H4bptc） and structurally characterized by single-crystal diffraction, IR and elemental analysis. The polymer crystallizes in the orthorhombic system, space group Pnna with a = 13.411（1）, b = 16.418（2）, c = 9.178（7）, V = 2025.2（3） 3, Z = 4, C17H14O13Zn2, Mr = 557.06, Dc = 1.827 g/cm3, F（000） = 1120, μ（MoK α） = 2.439 mm-1. The final R and wR are 0.0548 and 0.1691 for 1279 observed reflections with I 2（I）. In this compound, the bptc4- anion adopts monodentate bridging coordination modes connecting the zinc（II） ions to form a 1D chain structure, which furnishes a 2D supramolecular architecture through hydrogen bonding interactions formed by carboxylic oxygen atoms of bpdc, oxygen atoms of crystalline methanol and water molecules. Complex 1 displays an emissive maximum at 435 nm in the solid state at room temperature.

Synthesis and Crystal Structure of a Cobalt(Ⅱ) Coordination Polymer with Benzene-1,3,5-triacetate and 1,2-Di(pyridin-4-yl)ethene

A novel coordination polymer, [Co3（bta）2（dpe）3（H2O）2]·2H2O （1, H3bta = benzene-1,3,5-triacetic acid, and dpe = 1,2-di（pyridin-4-yl）ethene）, 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 P , with a = 9.5687（15）, b = 11.2470（17）, c = 13.686（2） , α = 78.262（3）, β = 89.271（4）, γ = 81.292（3）°, V = 1425.2（4） 3, C60H56N6O16Co3, Mr = 1293.90, Dc = 1.508 g/cm3, F（000） = 667, μ = 0.940 mm-1 and Z = 1. The final R = 0.0707 and wR = 0.1413 for 4950 observed reflections （I 2σ（I））. In the title complex, the bta ligand acts as a four-dentate bridging ligand to link up cobalt atoms into lamellar frameworks which are further interlinked by the dpe ligands to generate a trinodal （3,4,6）-connected （4.62）2（42.68.83.102）（64.82） net.

A Zinc(Ⅱ) Coordination Polymer Based on a Polycarboxylate Ligand: Synthesis, Crystal Structure, Photoluminescence and Photocatalysis

A new zinc coordination polymer（CP） {[Zn1.5（ttb）0.5（phen）（H2O）]·2 H2O}n（1）,（H6ttb = 3,4,5-tricarboxyl-（3?,4?,5?-tricarboxylazophenyl）benzene, phen = 1,10-phenanthroline）, has been hydrothermally synthesized and structurally characterized by single-crystal X-ray determination, IR and thermogravimetric analysis（TGA）. CP 1 crystallizes in the monoclinic system, space group C2/c with a = 12.402（3）, b = 15.231（3）, c = 22.233（4） ?, β = 94.388（3）°, Zn1.5C21H16N3O9, Mr = 552.42, V = 4187.3（15） ?3, Dc = 1.753 g/cm3, F（000） = 2240, μ = 1.795 mm-1, S = 1.041, GOF = 1.041, Rint = 0.0169, 2.36°<θ<30.95°, and Z = 8. The final refinement gave R = 0.0340 and w R = 0.0927 for 5791 observed reflections with I > 2σ（I）. The completely deprotonated（ttb）6- ion in 1 adopts an octadentate coordination mode（μ8-η2-η1-η1-η1-η1-η2）. Four of the carboxyl groups are coordinated with four zinc ions by monodentate, respectively. While the other two carboxyl groups are coordinated with four zinc ions by bidentate, respectively. So, CP 1 possesses a 3 D network structure cross-linked by（ttb）6-ion. The XRD, UV and photoluminescence properties of CP 1 were also studied. Remarkably, 1 exhibits photocatalytic activities for the degradation of dye（MO） under UV light irradiation and shows good stabilities towards UV-light photocatalysis.

Synthesis, Structure and Luminescent Property of a New Zn(Ⅱ) Coordination Polymer Based on 1,3,5-Benzenetricarboxylate and 4,4'-Bipyridine Ligands

A new Zn（II） coordination polymer [Zn3（BTC）2（4,4＇-bpy）（CO）2]n （1, H3BTC = 1,3,5-benzenetricarboxylic acid, 4,4＇-bpy = 4,4＇-bipyridine） has been prepared through urothermal reaction of zinc nitrate hexahydrate with 1,3,5-benzenetricarboxylic acid and 4,4＇-bipyridine, and characterized by elemental analysis, IR spectroscopy, TGA and powder XRD, and its crystal structure was determined by single-crystal X-ray diffraction analysis. The title compound crystallizes in the monoclinic system, space group C2/c, with a = 10.262（3）, b = 18.838（5）, c = 15.083（4）/k, fl = 99.203（4）°, V = 2878.3（14） A3, C30H14Zn3N2O14, Mr= 822.54, Z = 4, Dc = 1.898 g/cm3,μ = 2.561 mm-1,F（000） = 1640, R = 0.0363 and wR = 0.0932 for 2828 observed reflections （I 〉 2σ（I））. X-ray analysis shows that the asymmetric unit of the title compound contains two crystallographically unique Zn（lI） atoms which are connected by BTC3- ligands and 4,4＇-bpy coligands to form a 3D framework with 1D channels. The solid luminescence of ligand and the title complex was also studied at room temperature.

A New Luminescent Cd(Ⅱ) Coordination Polymer Constructed by Mixed 1,4-Naphthalenedicarboxylate and N-donor Chelating Ligand

In this work, we synthesized a new two-dimensional Cd（Ⅱ） coordination polymer, [Cd（1,4-NDC）（L）]（1）, by using mixed 1,4-naphthalenedicarboxylic acid（1,4-H2NDC） and typical chelating N-donor ligands 2-（2-chloro-6-fluorophenyl）-1H-imidazo[4,5-f][1,10]phenanthroline ligand（L）. Compound 1 crystallizes in monoclinic, space group P21/n with a = 12.936（5）, b = 15.245（5）, c = 13.499（5） ？, β = 105.456（5）o, V = 2565.9（16） A^3, Z = 4, C（31）H（16）CdClFN4O4, Mr = 675.33, Dc = 1.748 g/cm^3, F（000） = 1344, μ（MoKa） = 1.011 mm^-1, R = 0.0350 and wR = 0.0926. In 1, each 1,4-NDC anion bridges three adjacent Cd（Ⅱ） atoms to give a two-dimensional layer structure. The L ligands are attached on both sides of the layer in chelating coordination modes. In addition, the N–H···O hydrogen bond between L and 1,4-NDC further stabilizes the layer structure of 1. Moreover, the solid state luminescent property of 1 was also investigated at room temperature.

Synthesis, Crystal Structure and Properties of a Chiral 3D Supramolecular Coordination Polymer [Co(HL)·(DMF)]_n from 5-(Imidazol-1-ylmethyl)isophthalic Acid

A chiral supramolecular coordination polymer, [Co（HL）·（DMF）]n（1）, with helical chains from a flexible ligand 5-（imidazol-1-ylmethyl）isophthalic acid（H2L） has been obtained under hydrothermal conditions and characterized by elemental analysis, powder X-ray diffraction（PXRD）, IR, Uv/vis spectra, thermal gravimetric analyses（TGA） and also by single-crystal X-ray diffraction. It crystallizes in hexagonal, space group P6522 with a = 8.8109（3）, b = 8.8109（3）, c = 71.771（3） , γ = 120°, V = 4825.3（3） -3, Z = 6, Mr = 695.55, Dc = 1.436 g/cm-3, Rint = 0.0684, F（000） = 2166, the final R = 0.0923 and w R = 0.2697 for 3056 observed reflections（I 2σ（I））. The title coordination polymer 1 shows a chiral layered structure based on right-handed helix chains. Such layers are associated together through hydrogen-bonding interactions to form a 3D supramolecular framework.

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.

Construction of a New Two-fold Interpenetrated Three-dimensional Cobalt(Ⅱ)Coordination Polymer Based on 2,5-Thiophenedicarboxylic Acid and Bis(imidazol-1-yl)methane

A cobalt coordination polymer, {[Co2（tdc）2（bimm）2]·（3 DMF）}n, was synthesized based on 2,5-thiophenedicarboxylic acid（H2 tdc） and bis（imidazol-1-yl）methane（bimm） mixed ligands. The asymmetric unit of the complex contains two Co2＋） cations, two tdc2-dianions, two neutral bimm ligands, and three free DMF molecules. In the complex, deprotonated tdc2-dianions alternately bridge the adjacent Co2＋ cations to generate chains, which are further connected by the flexible bimm ligands to form a 3 D structure containing adamantanoid-like subunits. In topology, the structure of 1 represents a 4-connected uninodal two-fold interpenetrated dia（66） topology. Moreover, the solid UV-Vis absorption spectra of the complex have also been investigated.

A New Cd(Ⅱ) Coordination Polymer Constructed by 1,10-Phenanthroline Derivative: Syntheses, Structure, Physical Properties and Theoretical Calculation

A new Cd（Ⅱ） coordination polymer, [Cd（L）2（H2O）]n（1）, has been hydrothermally synthesized by using 1-（1 H-imidazo[4,5-f][1,10]phenanthrolin-2-yl）naphthalen-2-ol（HL）,(3-（4-（carboxymethoxy）phenyl）acrylic acid and Cd（NO3）·4 H2O. It crystallizes in monoclinic, space group P21/c with a = 19.41（2）, b = 11.078（12）, c = 20.09（2） ?, β = 116.824（17）o, V = 3855（7） ?3, Z = 4, C46H28CdN8O3, Mr = 853.17, Dc = 1.470 g/cm3, F（000） = 1728, μ（Mo Ka） = 0.621 mm-1, R = 0.0338 and wR = 0.0890. 1 shows a one-dimensional（1 D） zigzag chain structure. The neighboring chains are extended into a two-dimensional（2 D） layer structure by π-π interactions between adjacent L ligands. In addition, Natural Bond Orbital（NBO） analysis was performed by the B3LYP/LANL2DZ method in Gaussian 09 Program. The calculation results show the obvious covalent interaction between the coordinated atoms and Cd（Ⅱ） ion.

A New Coordination Polymer Pb(C_(12)H_6O_4)：Structure Resolution of Non-merohedral Twinning Crystal

Hydrothermal reaction of naphthalene-1,8-dicarboxylate with Pb Cl_2 leads to a new coordination polymer compound,Pb（C_（12）H_6O_4）.Single-crystal X-ray diffraction analysis reveals that it crystallizes in monoclinic,space group P2_1/c with a = 13.1648（18）,b = 5.3881（8）,c = 14.599（2） A,β = 95.759（2）o,V = 1030.3（3） A^3,Z = 4,Mr = 384.32,Dc = 2.7167 g/cm^3,F（000） = 768,μ（Mo Kα） = 16.37 mm^-1,R = 0.043 and w R = 0.097.The structure of Pb（C_（12）H_6O_4） was refined by two components non-merohedral twinning model with the twin law of（-1000-100.224 0 1） and twinning ratio of 0.736：0.264.In this structure,the Pb atoms are surrounded by five O atoms from ligands into PbO_5 polyhedra,which are further interconnected to form a 2D layer structure parallel to the bc-plane.

A New Two-dimensional Cadmium(Ⅱ) Coordination Polymer Constructed by 1,10-Phenanthroline Derivative and Flexible Dicarboxylate:Syntheses,Structure,Thermal Behavior and Luminescence

In this work,a new two-dimensional Cd（Ⅱ） coordination polymer,[Cd3（L）2（cis-1,4-chdc）2（trans-1,4-chdc）]（1,L = 11-fluoro-dipyrido[3,2-a：2’,3‘-c]phenazine and 1,4-H2 chdc = 1,4-cyclohexanedicarboxylatic acid）,has been prepared under hydrothermal conditions.It crystallizes in triclinic,space group P1 with a = 8.6951（8）,b = 10.8362（9）,c = 14.9445（13） A,α = 76.443（2）,β = 81.8670（10）,γ = 82.0640（10）°,V = 1347.0（2） A^3,Z = 1,C60H48Cd3F2N8O12,Mr = 1448.26,Dc = 1.785 g/cm^3,F（000） = 722,μ（Mo Ka） = 1.255 mm^-1,R = 0.0333 and w R = 0.0790.The 1,4-chdc^2-carboxylates bridge the Cd（Ⅱ） cations to form a tri-nuclear Cd（Ⅱ） cluster,which are held together by the cis-1,4-chdc^2-ligands to generate a double-stranded chain.Further,the trans-1,4-chdc^2-ligands bridge adjacent double-stranded chains to yield an interesting two-dimensional network.The π-π interactions among L ligands of neighboring networks result in an interesting three-dimensional supramolecular architecture.In addition,the thermal behavior and luminescent property of 1 have been studied.

Synthesis,Structure and Photoluminescence of a New Pb(Ⅱ)Coordination Polymer[Pb(1,4-chdc)(L)]n·nH2O Based on a Flexible 1,4-Cyclohexanedicarboxylic Acid

A new Pb（Ⅱ） coordination polymer, [Pb（1,4-chdc）（L）]_n·nH_2O（1）, was synthesized under hydrothermal condition（1,4-H2 chdc = 1,4-cyclohexanedicarboxylic acid and L = 2-（3-fluorophenyl）-1H-imidazo[4,5-f][1,10]phenanthroline）. Its crystal structure was determined by singlecrystal X-ray diffraction. Compound 1 crystallizes in triclinic, space group P1 with a = 9.1182（8）, b = 11.3249（10）, c = 12.7326（12） A, α = 77.897（2）, β = 81.644（2）, γ = 84.491（2）°, V = 1269.0（2） A^3, Z = 2, C_（27）H_（24）FN_4O_5Pb, M_r = 710.69, D_c = 1.860 g/cm^3, F（000） = 690, μ（MoKa） = 6.701 mm^（-1）, R = 0.0349 and wR = 0.0746. In 1, each 1,4-chdc anion bridges two neighboring Pb（Ⅱ） atoms in a bidentate chelating coordination mode to give a chain structure. The L ligands are attached on one side of the chain through chelating the Pb（Ⅱ） atoms, and are stacked with those of an adjacent chain through π-π interactions, yielding a layer structure. The O-H···O and N-H···O hydrogen bonding interactions further stabilize the supramolecular layer structure of 1. Moreover, solid state luminescent property of 1 was also studied.

A One-dimensional Cd(Ⅱ)Coordination Polymer Constructed from 1,4-Benzene-dicarboxylic Acid and 3-(2,6-Di(pyrazin-2-yl)pyridin-4-yl)-1H-indole:Synthesis,Structure and Photoluminescence

A new coordination polymer {[Cd（C_（21）H_（14）N_6）（C_8H_4O_4）]·H_2O}_n（1） was synthesized by an elaborate design via the reaction of 3-（2,6-di（pyrazin-2-yl）pyridin-4-yl）-1H-indole（bppi）,1,4-benzene-dicarboxylic acid（H2bdc） and cadmium（Ⅱ） nitrate in CH_3OH/H_2O mixed solvents. Complex 1 crystallizes in orthorhombic,space group Ccca with a = 20.012（4）,b = 31.881（6）,c = 19.808（4） ？,V = 12638（4） ？~3,Z = 16,C_（29）H_（20）CdN_6O_5,M_r = 644.91,D_c = 1.356 g·cm^（-3）,μ = 0.735 mm^（-1）,F（000） = 5184,GOOF = 1.046,the final R = 0.0405 and wR = 0.1063 for 6870 observed reflections（I 〉 2σ（I））. The Cd（Ⅱ） centre is hepta-coordinated by three N and four O atoms from one bppi terminal ligand and two bdc2– ligands,respectively,displaying a capped trigonal prism geometry. Structure extension gives coordination polymeric chains,in which the bdc2– linkers connect Cd（Ⅱ） cations into a one-dimensional（1D） coordination polymer along the c axis,giving zigzag chains with the Cd···Cd separation of 11.178（1） ？. The adjacent bppi terminal ligands in the chains are anti-periplanar conformation. The three-dimensional（3D） structure is stabilized by π···π stacking and hydrogen-bonding interactions to form a supramolecular self-penetrating network with 1D channels. In 1,there are voids 2999.7 ？~3 with 23.7% of per unit cell volume. Thermal analysis indicates that the framework of 1 is stable until 651 K and the photoluminescence of 1 in the solid shows very weak fluorescence at 382 and 560 nm upon excitation at 310 nm.

A 3-D Supramolecular Network with 1-D Cation Metal-organic Coordination Polymers and Diverse Motifs from Hydrogen-bonded [M(H_2O)_4]-Carboxylates

One-pot solvothermal reaction of Iransition metal Znn salt with 4,4-bipyddyl （bpy） and 1,4-benzenediacrylic add （H2L） in the presence of Et3N generates a three-dimensional （3-D） supramolecular network with 1-D cation metal-organic coordination polymer, [Zn（H20）a（bpy）]-L 1, and structurally characterized by single-crystal X-ray diffraction, elemental analyses, IR spectroscopy, and photoluminescent property. The complex crystallizes in triclinic, space group P1 with a = 7.1291（2）, b = 7.3784（3）, c = 10.5042（3）A, α = 95.049（2）, β = 102.162（2）, 7 = 97.027（3）0, V= 532.38（3）A3, C22H24N2O8Zn, Mr = 509.82, De= 1.590 g/cm3, p（MoKa）= 1.207 ram-l, F（000） = 264, Z = 1,the finalR=O.0438and wR=O.lOll for 1589 observed reflections （I 〉 2σ（I））. In the crystal structure, the second building unit composed of [Zn（H2O）4].L constructs two distinct 2-D supramolecular sheets and a neutral 3-D architecture. The title compound 1 shows strong photoluminescence with emission maximum at 2 = 455 nm upon λex.max = 355 nm.