One-dimensional Chain Coordination Polymer Research Articles

Solvent control of dimensionality in titanium aryloxide coordination polymers prepared from 4,4′-bis(hydroxyphenyl)sulfide

The crystal and molecular structures of three covalent metal–organic network (CMON) materials synthesized from titanium (IV) isopropoxide and the Bisphenol-A analog 4,4′-bis(hydroxyphenyl)sulfide in three different solvents have been determined. The structures of the one-dimensional chain coordination polymer [trans-Ti(μ-O:O’-OC6H4SC6H4O)2(C5H5N)2]n (1) obtained from pyridine and the two-dimensional sheet coordination polymer {[Ti2(μ-O:O’-OC6H4SC6H4O)2(μ2O:κO’-OC6H4SC6H4O)2(C4H8O)2]∙(C4H8O)y}n (2) from tetrahydrofuran both contain octahedral titanium (IV) coordination geometries, whereas the doubly interpenetrated three-dimensional coordination network [Ti2(μ-O:O’-OC6H4SC6H4O)2(μ2O:κO′-OC6H4SC6H4O)2]n (3) synthesized from benzene contains trigonal bipyramidal titanium (IV). Each material has been characterized by single crystal and powder X-ray diffraction, elemental analysis, and by 1H NMR quench when it contains more than one organic component.

Two one-dimensional silver(I) coordination polymer modified electrodes for hydrogen evolution reaction and H2O2 recognition

Two new Ag(I) coordination polymers (CPs), namely: [Ag4(m-MOPhHIDC)2(BBM)2]n (1) {[Ag(BBM)](NO3)}n (2) (m-MOPhHIDC = m-methoxyanisaldehyde imidazole dicarboxylate, BBM = 2,2-(1,4-butanediyl)bis-1,3-benzimidazole), have been synthesized by solvothermal method and characterized. Structural analyses show that both complexes are one-dimensional chain coordination polymers, but the one-dimensional chains have different shapes, in which CP-1 is "V" shaped, and CP-2 is "wave-shaped". The electrochemical properties of composite electrodes CE-1 and CE-2 formed by mixing two coordination polymers with carbon paste electrodes were investigated respectively. Electrocatalytic hydrogen evolution characteristics of two composite electrodes were investigated by linear scanning voltammetry (LSV) in 0.5 M H2SO4 electrolyte, at 298 K the results show that when the current density reaches 10 mA cm−2, their overpotential positively shifted by 284 and 289 mV compared to CE (905 mV). And the Tafel slope of the CE-1 and CE-2 was 162 and 164 mV dec−1, respectively. The CE-1 exhibited superior electrocatalytic ability than CE-2, which may be attributed to the different coordination modes of central silver ions in the two CPs. In addition, the composite electrodes CE-1 and CE-2 also have a good identification effect on H2O2, and the detection limits of 36.7 and 6.2 μM in the linear range of 0.5-4000 μM were determined by chronoamperometry. Results show that the Ag(I) CPs can be used as effective dualfunctional electrocatalysts.

A smart sensing Zn(ii) coordination polymer based on a new viologen ligand exhibiting photochromic and thermochromic and multiple solid detection properties

A multi-functional one-dimensional chain coordination polymer synthesized from Zn(ii), m-phthalic acid and a novel viologen ligand.

Bifunctional silver(I) coordination polymer exhibiting selective adsorptive of Congo red and luminescent sensing for ferric ion

In this paper, the synthesis, characterization and dye adsorption properties of a new silver(I) coordination polymer (CP) [Ag2(L)(aip)]n (CP 1) (H2aip = 5-aminoisophthalic acid, L = 1,4-bis(5,6-dimethylbenzimidazol-1-yl)butane) were investigated. The one-dimensional chain CP 1 is constructed by the L and aip2− linkers. Congo red (CR) was used as model compound, the operational parameters include the effects of initial concentration of CR, solution pH, and temperatures were presented. The adsorption equilibrium data were best represented by the Langmuir isotherms, adsorption kinetics follows the pseudo-second-order models. In particular, maximum adsorption capacity of CP 1 towards CR reaches up to 297 mg/g at optimum conditions. Further, CP 1 showed highly selective and sensitive response to Fe3+ by luminescence quenching effects with a detection limit of 2.53 μM.

Avoiding Magnetochemical Overparametrization, Exemplified by One-Dimensional Chains of Hexanuclear Iron(III) Pivalate Clusters

One-dimensional chain coordination polymers based on hexanuclear iron(III) pivalate building blocks and 1,4-dioxane (diox) or 4,4'-bipyridine (4,4'-bpy) bridging ligands, [Fe6O2(O2CH2)(O2CCMe3)12(diox)]n (1) and [Fe6O2(O2CH2)(O2CCMe3)12(4,4'-bpy)]n (2), showcase the utility of the angular overlap model, implemented in the program wxJFinder, in the predictive identification of the relative role of intra- and intercluster coupling.

One-Dimensional Chain Copper(II) and Nickel(II) Coordination Polymers With N-Salicylideneglycine Schiff Base Ligand

[Cu(Sal-Gly)(Im)(H2O)] (1) and [Ni(Sal-Gly)(H2O)2] (2) (Sal-Gly = N-salicylideneglycinate) was synthesized and structurally characterized. 1 and 2 are one-dimensional chain coordination polymers. In 1, Cu(II) ion has a five-coordinated square-pyramidal geometry and is surrounded by two O and one N atoms from a tetradentate Sal-Gly dianion and one N atom from imidazole ligand and one O from adjacent Sal-Gly ligand. In 2, Ni(II) adopts six-coordinated distorted octahedral geometry and is surrounded by two O and one N atoms from a tetradentate Sal-Gly dianion, two O from two aqua ligands, and one O from adjacent Sal-Gly ligand.

Solvothermal synthesis and structural characterization of a new one-dimensional chain coordination polymer [Co(Bpdc)(Dpa)] n (H2Bpdc = benzophenone-4,4′-dicarboxylic acid, Dpa = 2,2′-dipyridylanine)

A new one-dimensional (1D) zigzag chain coordination polymer [Co(Bpdc)(Dpa)]n (H2Bpdc = benzophenone-4,4′-dicarboxylic acid, Dpa = 2,2′-dipyridylanine) (I) has been synthesized under solvothermal conditions and characterized by elemental analysis, IR, and X-ray single-crystal diffraction. The X-ray diffraction analysis reveals that I crystallizes in the monoclinic system, space group P21/c. The unit cell parameters for I: a = 12.586(1), b = 15.3415(1), c = 11.345(1) β = 91.719(7)°, V = 2173.1(3) A3, Z = 4.

Coordination Polymers Assembled from 3,5-Pyrazoledicarboxylic Acid and Bis(triazolyl) Ligands: Chiral and Meso-Structures Induced by Ligand Flexibility and a Six-Connected Self-Catenated Network

Seven coordination polymers with 3,5-pyrazoledicarboxylic acid (H3pdc) and bridging triazolyl ligands, [Ni3(pdc)2(btb)2(H2O)6]n (1), [Zn2(Hpdc)2(btb)(H2O)2]n (2), {[Ni3(pdc)2(bth)(H2O)8]·2DMF}n (3), [Ni(Hpdc)(bth)]n (4), [Ni3(pdc)2(bth)3(H2O)4]n (5), [Ni(Hpdc)(bth)(H2O)]n (6), and {[Zn(Hpdc)(bth)(H2O)]·2H2O}n (7) (btb = 1,4-bis(1,2,4-triazol-1-yl)butane, bth = 1,6-bis(1,2,4-triazol-1-yl)hexane), have been hydrothermally or solvothermally synthesized and structurally characterized. Complexes 1, 3, and 4 are all one-dimensional chain coordination polymers. The structure of 2 comprises herringbone-like two-dimensional 63 nets. 5 possesses a six-connected self-penetrated three-dimensional (3D) architecture with 44.610.8 topological symbol. Complexes 6 and 7 have a similar 3D framework and can be simplified as a four-connected 66 topological network. However, because of the flexibility of the bth ligands in conformations, homochiral helical and meso-helical chains are formed by metal ions and bth ligands in 6 and 7, respectively. The magnetic properties of compounds 1, 3, 5, and 6 are investigated over the temperature range of 1.8−300 K.

Synthesis, Characterization and Quantum Chemistry Study of a One-dimensional Chain Coordination Polymer [Zn(acac)<SUB>2</SUB>(4,4’-bipy)]<SUB><EM>n</EM></SUB>

以Zn（ClO4）2·6H2O,4,4＇-联吡啶及乙酰丙酮（物质的量比1∶1∶2）在甲醇中通过溶剂热法合成得到了标题聚合物[Zn（acac）2（4,4＇-bipy）]n.经元素分析、红外光谱、核磁共振氢谱、热重及X射线单晶衍射等表征,其晶体属单斜晶系,P2（1）/c空间群,晶胞参数：a=1.1366（10）nm,b=1.4914（14）nm,c=1.5534（10）nm,β=132.00（4）°,V=1.957（3）nm^3,Z=4.标题聚合物分子由Zn（acac）2与4,4＇-bipy是以分子比1∶1形成一维无限的链状结构.热重分析结果表明,聚合物在197℃以下稳定性良好.运用Gaussian03W对聚合物结构单元进行了量化计算分析,原子电荷分布及前沿占据轨道组成很好地佐证了晶体结构的配位环境.

One- and two-dimensional cobalt benzenecarboxylate coordination polymers containing a kinked organodiimine: Synthesis, structure, and magnetic properties

Hydrothermal reaction of cobalt nitrate, phenylmalonic acid, and 4,4′-dipyridylamine (dpa) resulted in formation of the coordination polymer [Co 2(phac) 4(dpa) 2(H 2O)] ( 1, phac = phenylacetate), where the phac ligand is formed in situ by the decarboxylation of phenylmalonic acid. Binuclear [Co 2(phac) 4(H 2O)] units with both bridging and monodentate benzenecarboxylate ligands are linked into a two-dimensional (4, 4) rhomboid grid network via dpa tethers within the structure of 1. Use of benzoate as the anionic component allowed the formation of [Co(benzoate) 2(dpa) 2] ( 2), which manifested a dpa-linked one-dimensional chain coordination polymer motif with pendant monodentate and chelating carboxylates. Modest antiferromagnetic coupling was observed within the binuclear units in 1.

The one-dimensional chain polymer of aqua(tyrosinato)zinc(II)

In the title compound, catena-poly[[aquazinc(II)]-micro(3)-tyrosinato], [Zn(C(9)H(7)NO(3))(H(2)O)](n), each Zn atom has a distorted square-pyramidal geometry comprised of three O atoms and one N atom from three tyrosinate (tyr) ligands, and one aqua ligand. Two inversion-related Zn(2+) ions are bridged by two O atoms from the phenolate groups of two tyr ligands to form a centrosymmetric dimeric unit, which can be described as a planar Zn(2)O(2) four-membered ring. These repeating dimeric units are arranged along the c axis to give a one-dimensional chain coordination polymer, in which the tyr ligand adopts an unusual chelating/bridging coordination mode.

Synthesis and structures of cadmium(II) complexes of a series of multinucleating N/S donor ligands

The coordination chemistry of a series of bis-bidentate ligands with cadmium(II) ions has been investigated. The ligands, containing two N,S-donor chelating (pyrazolyl/thioether) fragments, have afforded complexes of a variety of structural types (dinuclear M2L2 ‘mesocate’ complexes, a one-dimensional chain coordination polymer and a simple mononuclear complex) according to whether the bis-bidentate ligands act as bridges spanning two metal ions, or a tetradentate chelate to a single metal ion. The p-phenylene and m-biphenyl spaced ligands L1 and L3 form dinuclear M2L2 complexes where the ligands are arranged in a ‘side-by-side’ fashion. In contrast the m-phenylene spaced ligand L2 forms a one-dimensional coordination polymer where the ligands adopt a highly folded conformation. The 1,8-naphthalene spaced ligand L4 adopts a tetradendate chelating mode and affords a simple mononuclear complex.

Syntheses, structures and luminescent properties of a dimer and an one-dimensional chain coordination polymer with the flexible bis(triazole) and hydroxybenzoate ligands

Two novel complexes [Zn(phba) 2(btp)] 2 ( 1) and [Cd(phba) 2(btp)(H 2O)] n ( 2) have been synthesized by using 1,3-bis(1,2,4-triazol-1-yl)propane (btp) and 4-hydroxybenzoate (phba). 1 contains the neutral dimer Zn 2(btp) 2 metallacycle, while 2 forms the one-dimensional zigzag chain structure. 1 and 2 exhibit blue luminescent emissions at 402 and 394 nm, respectively, excited at 340 nm in the solid state at room temperature.

Hydrothermal synthesis, crystal structure and third-order non-linear optical property of a copper chloride cluster

A novel one-dimensional chain coordination polymer [[CuCl2]2(phen)2]∞ (1) and a three-dimensional coordination polymer [[CuCl] (phen)2](CuCl2) (2) were synthesized from simple hydrothermal reactions and the structures were characterized with elemental analysis, FT-IR spectrum and X-ray diffraction. Compound 1 crystallized in the monoclinic space group Cc with a = 9.874(2), b = 17.871(4), and c = 13.440(3) Å, α = 90.00°, β = 106.59(3)°, γ = 90.00°, R 1 = 0.0463, wR 2 = 0.0819. Compound 2 crystallized in the monoclinic space group P2/c with a = 14.4084(13), b = 12.6280(11) and c = 13.3560(12) Å, α = 90.00°, β = 111.490(2)°, γ = 90.00°, R 1 = 0.0771, wR 2 = 0.1439. In the packing structure, π–π stacking interactions are the most significant factors controlling the novel supramolecular sheets for the title compound. Moreover, the third-order non-linear optical property of the two compounds were also investigated and they show reverse saturable absorption and self-focusing performance.

Synthesis, crystal structure and fluorescent property of a novel one-dimensional chain coordination polymer generated from cadmium(II) and bridging ligand carbamyldicyanomethanide anion

The novel one-dimensional chain coordination polymer {[Cd(cda)2H2O]·H2O} n (cda = carbamyldicyanomethanide anion) has been synthesized and its crystal structure determined by X-ray crystallography. The complex crystallizes in a triclinic system with a space group and a = 7.217(2), b = 7.641(2), c = 11.806(3) Å, α = 79.403(4), β = 79.859(4), γ = 72.028(4)°. The cadmium(II) ion is coordinated by four nitrogen atoms from four nitrile groups and two oxygen atoms, one from an amide group and one from a water molecule. The coordination environment of the cadmium(II) is a distorted octahedron. The bridging ligand cda displays two coordination modes, μ1,5-cda and μ3-cda, and a one-dimensional chain is formed through these two kinds of coordination. A solution of the coordination polymer exhibits strong fluorescence.

Hydrothermal synthesis, crystal structure and third-order non-linear optical property of a novel one-dimensional copper(I) cyanide–organodiimine coordination polymer [Cu 6(CN) 6(phen) 4] n (phen=1,10-phenanthroline)

A novel one-dimensional chain coordination polymer [Cu 6(CN) 6(phen) 4] n 1 was synthesized from the simple hydrothermal reaction of Cu(CH 3COO) 2·H 2O, K 3[Fe(CN) 6] and phen·H 2O. With phen, CuCN exhibits a novel B–C–B–C chain array, namely the infinite chain is propagated via alternately three-coordinate (B) and four-coordinate (C) sites of monovalent Cu ions. It should also be noticed that the compound is the first example where the parent chain not only exhibits the [Cu(phen)] + side arm, but also is directly bound to the chelate ligand. Moreover, the third-order non-linear optical property of compound 1 was also investigated and it shows the reverse saturable absorption and self-focusing performance.

Synthesis and structural characterization of a new one-dimensional chain coordination polymer of copper(II) with diethylenetriamine and 1,3-bis(imidazol-1-ylmethyl)-5-methylbenzene

A novel one-dimensional coordination polymer, {[Cu(dien)(dimb)](ClO 4) 2} n [dien=diethylenetriamine; dimb=1,3-bis(imidazol-1-ylmethyl)-5-methylbenzene] was synthesized by treatment of [Cu(dien)(im)](ClO 4) 2 (im=imidazole) with the dimb ligand. The complex was characterized by X-ray crystallography and electrospray mass spectrometry. The coordination geometry around Cu(II) is distorted square-based pyramid with N 5 donor set.

Infrared Spectra and Crystal Structure of <I>BIS</I>-(Dimethoxylphosphato) Copper

The title complex has beep synthesized by the reaction of CaCl2, with trimethyl phosphate. Its Infrared spectra from 4000 to 100 cm(-1) measured. The assignment of acme absorption bands was discussed. It is found that the stretching vibrations of bridge groups O-P-O are divided into two groups according to their bond length. The crystal structure of the complex boa been determined from single crystal K-ray diffraction data. The crystals belong to monoclinic system, space group P2(1)/c with cell parameteras, a = 1,0704(4), b = 0.5093(2), c = 1.9737(6)nm, beta = 96.23(3)degrees, V = 1.0696(6)nm(2), Z = 4, final R = 0.044. Copper ion is coordinated to five Rimester oxygen atoms to form a distorted square pyramid. The adjacent copper ions are connected by symmetric and non-symmetric bridge groups of O-P-O, forming an infinite one-dimensional chain coordination polymer.