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.     

Hydrothermal Synthesis and Crystal Structure of a 2D Zinc（Ⅱ） Coordination Polymer with 5-Hydroxynicotinic Acid

The title compound,[Zn(5-hydroxynicotinate) 2 2H 2 O] n,has been synthesized by reacting zinc sulfate vitriol with 5-hydroxynicotinic acid under hydrothermal conditions,and its structure was determined by X-ray crystallography with the following data:monoclinic,space group C2/c,C 12 H 12 N 2 O 8 Zn,M r=377.61,a=10.223(3),b=10.319(3),c=13.613(4),β=105.922(6)°,Z=4,V=1380.9(8)3,F(000)=768,D c=1.816 g/cm 3,μ(MoKα)=1.826 mm-1,the final R=0.0401 and wR=0.1380 for 1157 observed reflections (I > 2σ(I)).In the structure of the title compound,the Zn II ion located in an inversion center lies in a distorted tetrahedral environment at a N 2 O 2 coordination mode,and the 5-hydroxynicotinic acid ligand links symmetry-related Zn II ions at a μ 2-N,O bridging way forming a two-dimensional covalent structure.In the crystal,solvent water molecules form intermolecular O-H O hydrogen bonds and pyridine rings of adjacent layers form π-π stacking (3.346),which connect adjacent two-dimensional sheets into a three-dimensional supramolecular network.     

Hydrothermal Synthesis and Crystal Structure of a 1D Cu（II） Coordination Polymer： [Cu（bbpy）（H_2bptc）]_n Constructed by a Tetracarboxylic Acid

The title compound [Cu(bbpy)(H2bptc)]n (bbpy = 4,4'-dimethyl-2,2'-bipyridine and H4bptc = 1,1'-biphenyl-2,2?,3,3'-tetracarboxylic acid) has been synthesized by hydrothermal reaction, and its structure was determined by X-ray diffraction and characterized by elemental analysis, IR spectrum and thermogravimetric analysis. The crystal is of triclinic, space group P1 with a = 11.2831(12), b = 11.6718(13), c = 11.7771(13), α = 105.392(2), β = 108.382(2), γ = 112.397(2)o, CuC28H20N2O8, Mr = 576.00, V = 1222.4(2)3, Dc = 1.565 g/cm3, F(000) = 590, μ = 0.951 mm-1, S = 1.022 and Z = 2. The final refinement gave R = 0.0405 and wR = 0.1142 for 4270 observed reflections with I > 2σ(I). The title complex has a 1D [Cu(bbpy)(H2bptc)]n chain structure, in which the extensive hydrogen-bond interactions make the chain more stable. The neighboring parallel chains are further packed into a 2D layer structure via π···π stacking interaction between the pyridine rings of bbpy ligands. Moreover, the adjacent layers are interconnected by the C-H···π interactions to form a 3D metal-organic framework.     

Hydrothermal Synthesis and Crystal Structure of a Three-dimensional Cadmium（II） Complex

A metal-organic coordination polymer [Cd2(PDC)2(bix)(H2O)2]n ·nH2O(H2PDC=2,4-pyridinedicarboxylic 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. Brown crystals crystallize in the orthorhombic system, space group P2 12 12 1 with a=11.741(3), b=14.190(4), c=18.963(5) , V=3159.4(14) 3 , C28H26Cd2N6O11, Mr=847.35, Dc=1.781 g/cm3 , F(000)=1680, Z=4, μ(MoKα)=1.415 mm 1 , the final R=0.0381 and wR=0.0882 for 5472 observed reflections (I >2σ(I)). The structure of 1 exhibits a threedimensional network structure.     

Synthesis,Crystal Structure and Luminescence of a Novel Cadmium（Ⅱ） Coordination Polymer with 5-Connected nov Net

A novel interesting coordination polymer,[Cd(HSSA)(2-bimb)2].3H2O(1,H3SSA = 5-sulfosalicylic acid,2-bimb = 1,2-bis(imidazol-1-ylmethyl)-benzene),has been synthesized and structurally characterized.Compound 1 crystallizes in the monoclinic system,space group P21/n with a = 10.8653(10),b = 19.4100(17),c = 17.4414(17) ,β = 91.944(2)°,V = 3676.2(6) 3,Z = 4,C35H38CdN8O9S,Mr = 859.19,Dc = 1.552 g/cm3,μ = 0.717 mm-1,S = 0.999,F(000) = 1760,R = 0.0531 and wR = 0.1078.The compound features a rare three-dimensional(3D) 5-connected nov topology.In addition,compound 1 exhibits strong photoluminescent emission at room temperature.     

Synthesis,Structure and Characterization of a Cd（Ⅱ） Polymer Based on 6-Hydroxynicotinic Acid

A new 2D layered Cd（Ⅱ） coordination polymer, [Cd（HnicO）（phen）（NOa）]n 1 （H2nicO = 6-hydroxynicotinic acid, phen = 1,10-phenanthroline）, has been hydrothermally synthesized and characterized by elemental analysis, IR, and single-crystal X-ray diffraction. It crystallizes in the monoclinic system, space group P21/c with a = 11.1107（2）, b = 13.7639（2）, c = 12.1457（4）A, β = 108.695（1）°, V = 1759.40（7） A^3 Z = 4, Mr= 492.72, F（000） = 976, Dc = 1.860 g/cm^3,μ= 1.289 mm^-1, the final R = 0.0205 and wR = 0.0550 for 3663 observed reflections （I 〉 2σ（I））. X-ray single-crystal structural analyses reveal that in complex 1, the HEnicO ligands and Cd（Ⅱ） nodes define the structure to be （4,4） 2D nets which are further assembled into the final 3D architecture via supramolecular interactions such as hydrogen bonds and aromatic interactions. Moreover, the solid-state luminescent study shows the title polymer possesses intense luminescent property at room temperature.     

Hydrothermal Synthesis and Crystal Structure of a Manganese（Ⅱ） Coordination Polymer with 1,1＇-Biphenyl-2,2＇,6,6＇-tetracarboxyl Acid and 2,2＇：6,2＇-Terpyridine Ligands

The title compound {[Mn（H2BPTC）（tpy）（H2O）]·（H2O）3}, （1, H4BPTC = 1,1＇- biphenyl-2,2＇,6,6＇-tetracarboxylic acid, tby = 2,2＇：6,2＇-terpyridine） has been synthesized by the hydrothermal reaction, and its s...     

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.     

Hydrothermal Synthesis and Crystal Structure of a Nickel（Ⅱ） Polymer with a One-dimensional Chain Structure：[Ni（cbba）_2（bipy）（H_2O）_2]_n

A metal-organic coordination polymer formulated as [Ni(cbba) 2 (bipy)(H 2 O) 2 ] n 1 (H 2 cbba=2-(4-chlorine-benzoyl)benzoic acid,bipy=4,4-bipyridine) has been hydrothermally synthesized and structurally characterized by elemental analysis,IR spectrum,TG and single-crystal X-ray diffraction.The title compound crystallizes in the triclinic system,space group P1 with a=5.4550(4),b=11.4099(8),c=15.3135(11),α=68.7680(10),β=81.3470(10),γ=79.3450(10)o,V=869.48(11) 3,C 38 H 28 Cl 2 N 2 NiO 8,M r=770.23,D c=1.471 g/cm 3,μ(MoKα)=0.768 mm 1,F(000)=396,Z=1,the final R=0.0456 and wR=0.1171 for 2477 observed reflections (I > 2σ(Ⅰ)).It exhibits a one-dimensional chain-like structure.     

Synthesis and Crystal Structure of a New Cadmium（ Ⅱ ） Polymer with One-dimensional Chain Structure： [Cd（5-hip）（phen）]n·nH2O （5-hip = 5-Hydroxyisophthalate,phen = 1,10-Phenanthroline）

A new metal-organic coordination polymer [Cd（5-hip）（phen）]n·nH2O 1 has been hydro- ermally synthesized and characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. The crystal of the complex crystallizes in monoclinic, space group P2/n with a = 8.8071（17）, b =12.386（2）, c = 16.981（3） A, β = 100.182（2）°, V = 1823.2（6） A^3, Mr=. 490.73, Dc =1.788 g/cm^3,μ（MoKa） = 1.240 mm^-1, F（000） = 976, Z= 4, the final R = 0.0458 and wR = 0.1373 for 2864 observed reflections （I 〉 2σ（I））. The Cd atoms are coordinated by two N atoms from the phen ligands and four O atoms from 5-hydroxyisophthalate ligands in a highly distorted octahedral geometry.     

Hydrothermal Synthesis and Crystal Structure of a Novel Binuclear Cd（ Ⅱ ） Coordination Polymer Based on 1,2-Benzenedicarboxylate and Imidazole

The hydrothermal reaction of Cd（OAc）2.H2O with 1,2-benzenedicarboxylate （1,2-BDC）, imidazole and H2O resulted in the formation of a binuclear polymeric Cd（ Ⅱ ） complex {[Cd2（1,2-BDC）2（Im）4].（H2O）}n which was then characterized by elemental analyses and single-crystal X-ray diffraction analysis. The crystal is of monoclinic system, space group P21/c with a = 14.6455（3）, b = 9.3530（2）, c = 23.7838（5）A, β= 106.6290（10）°, Cl12H104CdgN32O36, Mr = 3373.47, V = 3121.64（11）A^3, Dc = 1.795 g/cm^3, F（000） = 1672,μ= 1.428 cm^-1 and Z = 1. The final R = 0.0316 and wR = 0.0687 for 5045 reflections with I 〉 2σ（I）. In the title complex, the two Cd（ Ⅱ） ions are in different coordination environments with distorted octahedral and pengonal bipyramidal geometries, respectively. Two Cd polyhedra are linked together through one μ2-η^1：η^1 and one μ2-η^1：η^1 carboxylate groups from different 1,2-BDC ligands, giving rise to a binuclear Cd（ Ⅱ ） cluster, and such clusters are connected by bridged 1,2-BDC ligands to form a 2-D structure along the c axis. The inter- and intermolecular hydrogen bonds further connect the 2-D structures into a 3-D supramolecular network.     

Synthesis and Crystal Structure of a New Mn（Ⅱ） Coordination Polymer Based on Asymmetric Semi-rigid V-shaped Dicarboxylate

A novel manganese(Ⅱ) coordination polymer with 2-(4-carboxyphenoxy) benzoic acid (2,4'-H2oba) and 1,10-phenanthroline (1,10-phen) has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction, IR and elemental analysis. Compound [Mn(2,4'-oba)(1,10-phen)] is of monoclinic system, space group P21/n with a = 7.960(1), b = 15.464(2), c = 18.703(3) , β = 99.976(2)°, V = 2267.5(6) 3, Z = 4, Mr = 491.35, Dc = 1.439 g/cm3, F(000) = 1004 and μ = 0.623 cm·1. The final R = 0.0419 and wR = 0.0978 for 3444 observed reflections with I > 2σ(I). X-ray diffraction analysis reveals that the oba2-ligands adopt a bis(chelating bidentate) mode to link two Mn(Ⅱ) centers to form an infinite 1D helical chain. Furthermore, a 3D supramolecular structure was formed by π-π stacking interactions and hydrogen bonds.     

Synthesis and Crystal Structure of a New Lead Coordination Polymer： [Pb（L）（1,4-ndc）]

The title coordination polymer, [Pb(L)(1,4-ndc)] 1 (L = 2-(4-fluorophenyl)-1Himidazo[4,5f1,10]phenanthroline, 1,4-ndc = naphthalene-1,4-dicarboxylic acid), has been obtained by using hydrothermal synthesis and characterized by elemental analysis, IR and singlecrystal X-ray diffraction. It crystallizes in monoclinic, space group P21/c with a = 10.1043(11), b = 14.3162(15), c = 17.6061(18), β = 95.3990(10)°, V = 2535.5(5)3, Z = 4, C31H17FN4O4Pb, Mr = 735.68, Dc = 1.927 g/cm3, F(000) = 1416, μ(MoKa) = 6.709 mm-1, R = 0.0201 and wR = 0.0489. The 1,4-ndc dianions link neighboring Pb(II) atoms in a bis-chelating mode, yielding a one-dimensional chain structure along the c axis. The C–H···π interactions between the carbon atom of L ligand and the benzene ring of 1,4-ndc lead the one-dimensional chains to form a two-dimensional supramolecular layer. The π-π interactions between L ligand and 1,4-ndc ligand make the two-dimensional layers generate a three-dimensional supramolecular architecture. Additionally, the N–H···O hydrogen bonds further stabilize the structure of 1.     

Hydrothermal Synthesis and Crystal Structure of a New 2D Mn（Ⅱ） Coordination Polymer with 4,4′-Sulfonyldi Benzoic Acid and 1,4-Bis（imidazol-1-ylmethyl）benzene Ligands

A novel manganese coordination polymer [Mn2(sfdb)2(biyb)2(H2O)2]n (1, H2sfdb=4,4′-sulfonyldibenzoic acid, biyb=1,4-bis(imidazol-1-ylmethyl)benze) has been hydrothermally synthesized and structurally characterized by single-crystal X-ray determination, IR and thermogravimetric analysis (TGA). Complex 1 crystallizes in the triclinic system, space group P with a=10.138(4), b=11.187(5), c=13.582(6) γ, α=69.146(7), β=89.628(7), γ=77.076(7)°, Mn2C56H48N8O14S2, Mr=1231.02, V=1398.5(10) ·3, Dc=1.462 g/cm3, F(000)=634, μ=0.600 mm-1, S=1.088 and Z =1. The final refinement gave R=0.0570 and wR=0.1229 for 4889 observed reflections with I > 2σ(I). Interestingly, in complex 1, the sfdb2- and biyb ligands connect the Mn(II) ions into two-dimensional 2-fold interpenetrating layers, and such layers are further connected with each other to generate a 3D supramolecular structure through hydrogen bonding interaction.     

Synthesis and Crystal Structure of a New 2D Honeycomb—like Cadmium （Ⅱ） Complex with Tripodal Ligand

A new cadmium (II) coordination polymer, [Cd(TTTMB)₂]‐(SO₄) · 21H₂O, where TTTMB =1,3, 5‐tris (imidazol‐1‐yl‐methyl)‐2,4,6‐trimethylbenzene, was obtained by self‐assembly of tripodal ligand TTTMB with CdSO₄·2.7H₂O in acetonitrile, and characterized by X‐ray crystallography. The crystal data belongs to monoclinic space group C_c with cell parameters a = 1.16891(4) nm, b=2.06671(6) nm, c = 2.48185(7) nm, β = 97.8560(10)°, R = 0.0487, wR = 0.1211. The results of structure analysis indicate that each TTTMB ligand coordinates three metal atoms and in turn each Cd(II) atom with octahedral coordination geometry connects six nitrogen atoms of imidazole group from six different TTTMB ligands to produce a 2D honeycomb network structure. There are a lot of water molecules linked by hydrogen bonds and occupied the channels formed intra‐ and inter‐sheets.     

Hydrothermal Synthesis and Crystal Structure of a Cadmium（Ⅱ） Polymer with a Two-dimensional Network Structure： [ Cd（pzdc）（2,2＇-bipy） ]n·nH2O

A metal-organic coordination compound formulated as [Cd（pzdc）（2,2＇-bipy）]n·nH2O 1 （Hzpzdc = pyrazine-2,3-dicarboxylic acid, 2,2＇-bipy = 2,2＇-bipyridine） has been hydrothermally synthesized and structurally characterized by elemental analysis, IR, TG fluorescence spectrum and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic system, space group P2 1/c with a = 10.8081（13）, b = 14.4328（17）, c = 10.2530（12） A, β = 98.504（2）°, V= 1581.8（3） ]A3, C16H14CdN4O5, Mr= 454.71, Dc = 1.909 g/cm^3, μ（MoKa） = 1.420 mm^-1, F（000） = 904, Z = 4, the final R = 0.0230 and wR = 0.0554 for 2901 observed reflections （I 〉 2σ（I））. It exhibits an interesting two-dimensional network structure and shows yellow photoluminescent property at room temperature.     

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.     

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）.