Synthesis and Crystal Structure of a One-dimensional Silver(Ⅰ) Coordination Polymer with 4,4'-Bipyridine

The title compound,{[Ag2(bipy)2(H2O2]·pydc·2H2O}n(bipy=4,4'-bipyridine,pydc=pyridine-3,5-dicarboxylate),has been synthesized by the reaction of Ag2O with pydc and bipy in CH3OH solution.It crystallizes in the monoclinic system,space group C2/c with a=21.419(8),b=7.515(3),c=18.070(7)(A),β=108.273(6)°,Mr=765.27,V=2761.9(17)(A)3,Z=4,Dc=1.840 g/cm3,F(000)=1528,μ=1.478 mm-1,the final R=0.0307 and wR=0.0681.The structure determined demonstrated that the Ag(Ⅰ)is three-coordinated by two nitrogen atoms from bipy and one water molecule,forming a one-dimensional coordination polymer[Ag2(bipy)2(H2O)2]n2n ,which is further linked to generate a two-dimensional layer structure via Ag…Ag attractions.     

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.     

Dinuclear Silver（Ⅰ） Complex Based on 1-Picolyl-3-propylbenzimidazolium Salt： Crystal Structure and Weak Interactions

1-Picolyl-3-propylbenzimidazolium bromide (LBr) was prepared from benzimida- zole by alkylation with 2-chloromethyl-pyridine in the presence of NaH, followed by quaternization with 1-bromopropane. Ligand LBr was treated with AgBr in CH2Cl2 to afford a dinuclear silver(I) complex L2Ag2Br4 (1). In complex 1, a 2-D supramolecular layer is formed through two types of π-π stacking interactions. Fluorescent emission spectra of ligand LBr and complex 1 are described.     

Synthesis,Structure and Fluorescence of Olefin-Copper(Ⅰ) Coordination Polymers

The organic olefin ligand 2,5-dimethyl-1-(4-vinyl-benzyl)-piperazine reacts with CuX(X = Cl, Br) to obtain two novel olefin-copper(I) coordination polymers [C_(15)H_(22)N_2Cu_2Cl_3]n(1) and [C_(15)H_(20)N_2Cu_2Br_2]n(2). There are two types of CuX warp structures that have never been seen before in the presence of methanol under solvothermal conditions. The new olefin-copper(I) coordination complex crystallizes in the monoclinic space group P21/c to obtain compounds 1 and 2. Its unique green fluorescence effect can be applied to the LED field.     

Synthesis,Crystal Structure and Luminescence of One-dimensional Homochiral Terbium (Ⅲ) Coordination Polymers

Enantiomerically pure lanthanide(Ⅲ)-based phosphonates are successfully synthesized by using(R)-or(S)-(1-phenylethylamino)-methylphosphonate acid(pempH_2), namely, R-or S-[Tb_3(pempH_2)_2(pempH)_7]-Cl_2·H_2O(R-Tb or S-Tb), crystallizing in chiral space group P2_12_12_1. Compound R-Tb shows a one-dimensional homochiral triple-stranded helical chain structure where the Tb(III) atoms are bridged by O-P-O units and μ_3-O(P) bridge. The thermal analysis, photoluminescence as well as optically active properties of compounds R-Tb and S-Tb have also been investigated.     

Synthesis and Crystal Structure of Binuclear Silver(I) Complex with 2-nitro-(2-pyridylsulfanylmethyl)benzene

1 INTRODUCTION Metallosupramolecular species with metal-metal interactions have been designed and synthesized due to their potential applications as functional materi- als[1]. For Ag(I) coordination compounds, short Ag(I) –Ag(I) separations have been found in many bi- and polynuclear complexes[2~4], and these short metal- metal distances have been attributed to the ligand ar- chitecture[5, 6]. Thus, the rational design of bi- and polynuclear Ag(I) complexes must recognize the in- here…     

Synthesis of Lanthanide Coordination Polymers with Benzophenone-4,4′-dicarboxylate： Effect of Lanthanide Contraction on Structures

Four lanthanide coordination polymers with benzophenone‐4,4′‐dicarboxylic acid (H₂bpndc) and 1,10‐phenanthroline (phen), [Ln₂(bpndc)₃(phen)] (Ln=La (1), Pr (2) and Tb (3)), [Yb(bpndc)₁₅(phen)].05H₂O (4) were obtained through solvothermal synthesis. The crystallographic data show that 1, 2, and 3 are isostructural, the Ln(III) ions in 1, 2 and 3 are all eight‐ and ten‐coordinated, respectively, and thus the Ln(III) ions are connected by bpndc ligands, resulting in an interpenetrating 3D structure. While in 4, the Yb(III) ions are eight‐coordinated and connected by bpndc ligands into a 3D structure with 1D rhombic channels, which result from the effect of lanthanide contraction from La(III) to Yb(III) ions, and the bpndc ligands in 1, 2, 3, and 4 display three types of coordination modes.     

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, H3 BTC =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) A, β = 99.203(4)o, V = 2878.3(14) A3, C30H14Zn3N2O14, Mr = 822.54, Z = 4, Dc = 1.898g/cm3, μ = 2.561 mm-1, F(000) = 1640, R = 0.0363 and w R = 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(II) 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.     

Synthesis and Crystal Structure of a One-dimensional Silver(I) Coordination Polymer with 4,4'-Bipyridine

The title compound, {[Ag2(bipy)2(H2O)2]·pydc·2H2O}n (bipy=4,4'-bipyridine, pydc= pyridine-3,5-dicarboxylate), has been synthesized by the reaction of Ag2O with pydc and bipy in CH3OH solution. It crystallizes in the monoclinic system, space group C2/c with a=21.419(8), b=7.515(3), c=18.070(7), β=108.273(6)°, Mr=765.27, V=2761.9(17)3, Z=4, Dc=1.840 g/cm3, F(000)= 1528, μ=1.478 mm-1, the final R=0.0307 and wR=0.0681. The structure determined demonstrated that the Ag(I) is three-coordinated by two nitrogen atoms from bipy and one water molecule, forming a one-dimensional coordination polymer [Ag2(bipy)2(H2O)2]n2n+, which is further linked to generate a two-dimensional layer structure via Ag…Ag attractions.     

Organic Carboxylate Ligand Tuned Topological Variations in Three Zn(Ⅱ) Coordination Polymers: Syntheses,Crystal Structures and Photoluminescent Properties

Three new Zn(Ⅱ) coordination polymers, namely [Zn_2(suc)_2(bib)_2]_n·nH_2 O(1), [Zn(glu)(bib)]_n·4 nH_2 O(2), and [Zn(adp)(bib)]n(3)(bib = 1,4-bis(N-imidazolyl)butane, H_2 suc = succinic acid, H_2 glu = glutaric acid, H_2 adp = adipic acid) have been hydrothermally synthesized and structurally characterized. Compound 1 features a 3D framework with 4-connected hxg-d topological network, compound 2 is comprised of 2D 4~4-sql-type sheets, and the adjacent 2D sheets are further packed into a 3D supramolecular architecture via intermolecular hydrogenbonding interactions, and compound 3 is a 3D framework with 4-fold interpenetrating dia topology. The structural comparison of these three compounds demonstrates that the topological variations can be well controlled by employing aliphatic dicarboxylate ligands with different spacer lengths. Moreover, the thermal stabilities and photoluminescent properties of them were also studied in detail.     

Syntheses and Crystal Structure of Erbium(Ⅲ) Coordination Polymers with Two Flexible Double Betaine Ligands

1INTR0DUCTI0NLanthanidecarboxylatecomplexeshavebeenwidelystudiedt1iandm0starefoundtoexhibitavarietyofdimericorinfinitechainstructures.Recentstudiesinourlaboratoryhavedem0nstratedthattheprototypetertiaryaminebetaine(Me,N CHzC0z-)anditsderivativesareusefulinthegenerationoflanthanidecarb0xylate-likecomplexeswithnewstructuralfeaturesduetotheiroverallchargeneutralityandpossibleinclusionofvariouskindsofcounteranionsinthestructuret2~4i.Thelan-thanidecomplexesisolatedsofarhavebeenfoundtobemononu…     

Synthesis, Crystal Structure and Photoluminescent Property of a Novel Silver(Ⅰ) Compound {[Ag(bpp)]2(Hphth)(NO3)·(H2O)2}n

Self-assembly of Ag(Ⅰ) nitrate, 1,3-bis(4-pyridyl)propane (bpp) and phthalic acid monopotassium salt (KHphth) in CH3OH-H2O solution produced the title complex,{[Ag(bpp)]2(Hphth)(NO3)·(H2O)2}n, which was characterized by single-crystal X-ray diffraction,elemental analysis, IR spectrum, and photoluminescent spectrum. Single-crystal X-ray analysis revealed that the complex crystallizes in a monoclinic system, space group P21/c, with α =15.4174(5), b = 8.6398(2), c = 25.2466(8) (A), β = 91.072(1)°, V = 3362.34(17) (A)3, Z = 4,C34H37N5O9Ag2, Mr = 875.43, Dc = 1.729 g/cm3, μ = 1.228 mm-1, F(000) = 1768, the final R =0.0749 and wR = 0.1580 for 5754 reflections with I ＞ 2σ(I). The Ag atom is coordinated by two N atoms from two bpp molecules in an approximately linear geometry. The Ag(Ⅰ) ions are linked by the bpp molecules to form one-dimensional zigzag chains propagating along the c axis. The Hphth-and nitrate counter-ions are bridged by solvent water molecules through hydrogen bonds to generate a one-dimensional chain extending along the b axis. Electrostatic interactions between cations and anions, extensive hydrogen bonds and π-π interactions are responsible for the three-dimensional supramolecular structure. In the solid state, the compound exhibits blue photoluminescence with the maximum at 436 nm upon excitation at 344 nm.     

Syntheses and Crystal Structures of Two Zn(Ⅱ) Coordination Polymers Constructed with 4,4’-(Dihydroxymethylene)dibenzoic Acid

Two new isomorphous metal-organic coordination polymers, [Zn(dhmdb)(2,2'- bpy)]n 1 and [Zn(dhmdb)(1,10-phen)]n 2, have been obtained under hydrothermal reactions from 4,4'-(dihydroxymethylene)dibenzoic acid (H2dhmdb), Zn(NO3)2·6H2O and 2,2'-pyridine or 1,10- phenanthroline, respectively. Compounds 1 and 2 have been characterized by FT-IR spectroscopy, thermal analysis and single-crystal X-ray diffraction. The zigzag chains of 1 and 2 are linked into three-dimensional supramolecular networks by both O-H…O hydrogen bonds and π…π stacking interactions. Crystal data for 1: ZnC25H18N2O6, Mr = 507.78, orthorhombic, space group Pbca, a = 14.031(3), b = 10.826(2), c = 27.343(6), V = 4153.5(14)3, Z = 8, Dc = 1.624 g/cm3, F(000) = 2080, μ = 1.231 mm-1, R = 0.0699 and wR = 0.1829. Crystal data for 2: ZnC27H18N2O6, Mr = 531.80, orthorhombic, space group Pbca, a = 13.796(3), b = 10.809(2), c = 28.612(6), V = 4266.8(15)3, Z = 8, Dc = 1.656 g/cm3, F(000) = 2176, μ = 1.203 mm-1, R = 0.0454 and wR = 0.1399.     

Synthesis, crystal structures, and magnetic properties of two three-dimensional octacyanotungstate(IV)- based bimetallic frameworks with 4,4′-bipyridine dioxide (4,4′-dpdo)

The reaction of [HN(n-C4H9)3]3[WV(CN)8]·4H2O, 4,4′-bipyridine dioxide(4,4′-dpdo), and MnCl2·4H2O or CuCl2·2H2O gives two new three-dimensional octacyanometalate-based bimetallic assemblies, {[Mn2 (4,4′-dpdo)(H2O)4] [WIV(CN)8]}·6H2O (1) and {[Cu2(4,4′-dpdo)(H2O)][W(CN)8]}·CH3OH·H2O (2). Compound 1 crystallizes in the orthorhombic system, space group P21212 with cell constants a=10.397(2) -, b= 11.321(2) -, c=12.295(3) - and Z=2, whereas 2 crystallizes in the monoclinic system, space group P21/c with cell con...     

Synthesis,Crystal Structure and Photoluminescence of a Copper(Ⅰ)-iodide Coordination Polymer Based on Polyimidazolate Ligand

A copper(Ⅰ)-iodide coordination polymer, namely {[Cu3 I3(Tipa)2]·3(DMF)}n(1), was synthesized from tetrahedral Cu4 I4(py)4 precursor and tris(4-(~1H-imidazol-1-yl)phenyl) amine)(Tipa) ligand in N,N-dimethylformamide(DMF) and methanol, and characterized by single-crystal X-ray diffraction. Its crystal crystallizes in monoclinic system, space group P2/c with a = 12.849(4), b = 12.034(3), c = 24.619(7) ?, β = 104.681(4)°, Mr = 1604.52, V = 3682.4(18) ?3, Z = 2, Dc = 1.447 g/cm3, μ = 2.163 mm-1, S = 0.975, F(000) = 1580, the final R = 0.0835 and wR = 0.2354 for 6471 observed reflections(I 2σ(I)). In compound 1, the Cu4 I4(py)4 was in-situ changed into another neutral CuI unit. Interestingly, two CuI units and two imidazole rings of the tipa ligands form a macrocyclic loop, which are further linked by another CuI unit and the third imidazole ring of the tipa ligands to produce a 1 D loop-containing chain. Solvent molecules were filled in the pore of the loop, which prevents the interpenetration of each other. The packing of these 1 D chains generates a 1 D channel along the a-axis, which is filled by disordered DMF molecules. In addition, compound 1 exhibits high thermal stability and strong photoluminescence at room temperature.     

A New Nickel(Ⅱ) Coordination Compound Constructed by Pyridyl-triazole and Oxybis(Benzoic Acid): Synthesis,Crystal Structure and the Effect on the Thermal Decomposition of Ammonium Perchlorate

A new energetic complex, Ni(3,4'-Hbpt)2(Hoba)2(H2O)2(3,4'-Hbpt = 3-(3-pyridyl)-5-(4'-pyridyl)-1-H-1,2,4-triazole and H2 oba = 4,4'-oxybis(benzoic acid)), has been synthesized by hydrothermal reaction and characterized by elemental analysis, IR spectroscopy, single-crystal X-ray diffraction, thermogravimetric analyses and X-ray powder diffraction. Single-crystal X-ray diffraction analysis indicates that the complex belongs to the monoclinic system, space group P21/c with a = 10.2357(9), b = 24.594(2), c = 10.4225(9) A, β = 114.0110(10)°, V = 2396.7(4) A3, Dc =1.460 g/cm3, μ = 0.482 mm-1, Mr = 1053.63, F(000) = 1088, Z = 2, the final R = 0.0358 and wR =0.0973 with I 2σ(I). Both 3,4'-Hbpt and H2 oba ligands adopt monodentate modes linking one Ni(II)ion to form a 0D motif. Furthermore, the 0D motifs are linked into a 3D supramolecular architecture with hydrogen bonds. In addition, the catalytic performance for thermal decomposition of the efficacy of ammonium perchlorate(AP) is explored by differential scanning calorimetry(DSC),which indicates that the complex is a good candidate for a promoter of the thermal decomposition of ammonium perchlorate.     

Synthesis,Crystal Structure and Antitumor Activity of a Ca(Ⅱ) Coordination Polymer Based on 4-Acetylphenoxyacetate Ligands

A novel Ca(Ⅱ) coordination polymer,[Ca L₂(H₂O)₂]_n (1,HL=4-acetylphenoxyacetic acid) has been synthesized with 4-acetylphenoxyacetic acid,Ca(ClO_4)₂·4H₂O and Na OH as raw materials.Complex 1 was characterized by elemental analysis and single-crystal X-ray diffraction analysis.The results show that the Ca(Ⅱ)ion is eight-coordinated in a distorted triangular dodecahedral geometric configuration with six carboxylate Oatoms of four L ligands and two O atoms of two coordinated water molecules.Complex 1 forms a one-dimensional chained structure by the bridging effect of carboxylate O atoms.The antitumor activity of HLligand and complex 1 has also been investigated.     

Two New Cu(Ⅱ) Coordination Polymers Based on 2,5-Furandicarboxylic Acid and 2,2'-bipyridine:Synthesis and Crystal Structure

Two new Cu(Ⅱ) coordination polymers,[Cu(FDA)(BPY)(H2O)]n(1) and {[Cu(FDA)(BPY)(H2O)]·2H2O}n(2)(H2FDA = 2,5-furandicarboxylic acid,BPY = 2,2-bipyridine),have been synthesized and structurally characterized by single-crystal X-ray diffraction as well as elemental analysis and IR.Compound 1 crystallizes in monoclinic,space group P21/c,with a = 7.5915(15),b = 8.4050(17),c = 24.204(6) ,β = 99.05(3)°,V = 1525.1(6) 3,Dc = 1.706 g/cm3,C16H12CuN2O6,Mr = 391.82,F(000) = 796,μ(MoKα) = 1.470 mm–1,Z = 4,R = 0.0633 and wR = 0.1059 for 2389 observed reflections(I 2σ(I)),R = 0.0738,and wR = 0.1098 for all data.Complex 2 belongs to triclinic space group P1 with a = 8.8660(18),b = 8.9112(18),c = 12.525(3) ,α = 88.41(3),β = 69.38(3),γ = 66.95(3)°,V = 845.2(3) 3,Dc = 1.681 g/cm3,C16H16CuN2O8,Mr = 427.85,F(000) = 438,μ(MoKα) = 1.342 mm–1,Z = 2,R = 0.0290 and wR = 0.0690 for 2767 observed reflections(I 2σ(I)),R = 0.0329 and wR = 0.0706 for all data.Complexes 1 and 2 are both coordination polymers with one-dimensional chain structures bridged by the protonated FDA ligands,which are assembled into three-dimensional supramolecular structures through hydrogen bonding interactions and π-π packing interactions between the chains.     

Synthesis,Crystal Structure and Electrochemistry Property of 5,5'-dimethyl-2,2'-bipyridine Silver(Ⅰ) Complexes

The synthesis, crystal structures and electrochemistry of two easily soluble silver(Ⅰ) complexes[Ag(dmbpy)(NO₃)] 1 and[Ag(dmbpy)](ClO₄) 2,where dmbpy is 5,5'-dimethyl-2,2'-bipyridine, have been studied. Single-crystal X-ray diffraction reveals each silver(Ⅰ) atom in 1 is in a Y-shape coordination geometry with (the average Ag-N=2.278 Å) two N atoms from a dmbpy and an O atom (AgO=2.218 Å) from the monodentate nitrate. Each silver(Ⅰ) atom in 2 is three-coordinated by three N atoms, two of which are from a dmbpy, and one from the acetonitrile. 1 and 2 underwent an overall cyclic voltammogram process in acetonitrile and both complexes are stabilized by dmbpy in acetonitrile.     

Synthesis and Crystal Structure of a New Pr(Ⅲ)–K(Ⅰ) Heterometallic Oxalate Coordination Polymer

A new 3D heterometallic coordination polymer, namely [K2Pr2(C2O4)4·H2O]n(1), has been successfully synthesized under hydrothermal conditions. X-ray single-crystal diffraction determination reveals that 1 crystallizes in monoclinic system, space group P21/n with a = 12.060(4), b = 8.493(3), c = 15.776(5)(A), β = 93.235(3)°, V = 1613.4(9) 3, Z = 4, Mr = 730.12, Dc = 3.006 Mg/m3, μ = 6.581 mm-1, F(000) = 1368, the final R = 0.0283 and w R = 0.0866 for 2939 observed reflections with I 2σ(I). Complex 1 features an unusual 3D heterometallic coordination framework, in which oxalates exhibit three different coordination behaviours. Moreover, powder X-ray diffraction and thermal properties for 1 have also been investigated.