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Showing papers on "Coordination polymer published in 2003"




Journal ArticleDOI
TL;DR: Thermal and photoelectrochemical analyses indicate that the coordination polymeric compound not only has a high thermal stability but also exhibits interesting photoelectronic properties.
Abstract: The hydrothermal reaction of ZnUO2(OAc)4·7H2O with pyridine-2,3-dicarboxylic acid gives rise to a novel uranium−zinc−organic coordination polymer containing infinite U−O−Zn double sheets and organic ligands. Thermal and photoelectrochemical analyses indicate that the coordination polymeric compound not only has a high thermal stability but also exhibits interesting photoelectronic properties.

290 citations


Journal ArticleDOI
TL;DR: In this article, the investigations on the construction of silver-hexamethylenetetetramine coordination networks containing different additional ligands and counter anions have been reviewed.

253 citations


Journal ArticleDOI
Jian-Fang Ma1, Jin Yang1, Guo-Li Zheng1, Li Li1, Jing-Fu Liu1 
TL;DR: The complex 1 composing a porous supramolecular architecture displays unprecedented four-connected topology of an 8(6) net in coordination polymer chemistry.
Abstract: A novel coordination polymer {[Cu(L1)(L2)(H2O)]·5H2O}n (1), where L1 =1,1‘-(1,4-butanediyl)bis(imidazole) and L2 = m-phthalate anion, has been obtained by using an unusual crystallization process. ...

246 citations


Journal ArticleDOI
TL;DR: It has been found that interfacial coordination between NpImC17 and Ag(I) ion occurred both in the monolayer and in the Langmuir-Blodgett (LB) film.
Abstract: A novel amphiphilic compound 2-(heptadecyl) naphtha[2,3]imidazole (NpImC17) was synthesized, and its coordination with AgNO(3) in situ in the monolayer at the air/water interface and ex situ in the Langmuir-Blodgett (LB) film on solid substrate has been investigated. It has been found that interfacial coordination between NpImC17 and Ag(I) ion occurred both in the monolayer and in the LB film. It is interesting to note that the Ag(I)-coordinated ultrathin film became chiral although the ligand itself is achiral. It was suggested that the chirality of the Ag(I)-coordinated LB film was developed due to the formation of a helical coordination polymer through the interfacial coordination. To the best of our knowledge, this is the first report on the formation of chiral monolayer and LB films from an achiral molecule through interfacial coordination.

214 citations



Journal ArticleDOI
TL;DR: The reaction of Cu(NO3)2, glutaric acid and 4,4'-bipyridine in water affords a novel 3D coordination polymer which exhibits reversible desorption and adsorption of water molecules with retention of single crystallinity.

202 citations


Journal ArticleDOI
TL;DR: In this paper, a 3D network with nanosized channels constructed from one-dimensional coordination chains via C−H···O hydrogen bonds and aromatic intercalations was analyzed.
Abstract: Hydrothermal treatment of a mixture of [Zn(MeCO2)2]·H2O, terephthalic acid, and 2,2′-bipyridine resulted in a coordination polymer [Zn(bpy)(tp)](bpy) (1; bpy = 2,2′-bipyridine, H2tp = terephthalic acid) which crystallizes in the monoclinic space group C2/c, Mr = 541.85, a = 15.388(11), b = 21.963(11), c = 7.670(8) A, β = 112.82(2)°, V = 2387(3) A3, Z = 4, Dc = 1.506 g·cm−3. An X-ray single-crystal structural analysis reveals that 1 is a three-dimensional network with nanosized channels constructed from one-dimensional coordination chains via C−H···O hydrogen bonds and aromatic intercalations. TGA and XRPD showed that the porous network of 1 is very stable while the guest 2,2′-bipyridine molecules in the channels are removable. Compound 1 shows a strong ligand-centred emission at room temperature in the solid state. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)

197 citations


Journal ArticleDOI
TL;DR: Five novel silver(I) complexes are reported, which have the same 1:1 stoichiometry of Ag/tpa but exhibit different modes of coordination, depending upon the counterion present in the compound.
Abstract: The reaction of AgX, where X = trifluoroacetate (CF(3)CO(2)(-), tfa), nitrate (NO(3)(-)), trifluoromethanesulfonate (triflate, CF(3)SO(3)(-), OTf), hexafluorophosphate (PF(6)(-)), or perchlorate (ClO(4)(-)), with 2,2',3' '-tripyridylamine (tpa) yields five novel silver(I) complexes, which have been structurally characterized. The five complexes have the same 1:1 stoichiometry of Ag/tpa but exhibit different modes of coordination, depending upon the counterion present in the compound. Compound 1, [Ag(tpa)(tfa)](n)(), forms a 1D coordination polymer of [Ag(tpa)(tfa)](2) dimer units linked through bridging tfa counterions. Compound 2, [Ag(tpa)(CH(3)CN)(NO(3))](n), forms a zigzag chain 1D coordination polymer exclusively through Ag-N bonds. In compounds 1 and 2, each tpa ligand is bound to two Ag(I) ions via a 2-py and a 3-py group. Compound 3, [Ag(tpa)(OTf)](n), forms a ribbonlike 1D coordination polymer, in which each tpa ligand binds to three different silver centers via all three pyridyl groups, and the counterion remains coordinated to the Ag(I) center. Compounds 4, [Ag(tpa)(CH(3)CN)](n)(PF(6))(n), and 5, [Ag(tpa)(CH(3)CN)](n)() (ClO(4))(n), display ribbonlike structures resembling that of 3, except that the counterions are not coordinated. All complexes are luminescent in acetonitrile solution, with emission maxima in the near-UV region (lambda(max) = 366, 368, 367, 367, and 368 nm for 1-5, respectively). At 77 K, the emission maxima are red-shifted to lambda(max) = 452, 453, 450, 450, and 454 nm for 1-5, respectively.

179 citations


Journal ArticleDOI
TL;DR: Two new metal-organic based polymeric complexes have been synthesized and characterized by X-ray crystal structure determination and magnetic studies and the fit of the magnetic data considering intralayer interaction through carboxylate pathway as well as interlayer interaction via urotropine pathway gave no satisfactory result.
Abstract: Two new metal-organic based polymeric complexes, [Cu(4)(O(2)CCH(2)CO(2))(4)(L)].7H(2)O (1) and [Co(2)(O(2)CCH(2)CO(2))(2)(L)].2H(2)O (2) [L = hexamethylenetetramine (urotropine)], have been synthesized and characterized by X-ray crystal structure determination and magnetic studies. Complex 1 is a 1D coordination polymer comprising a carboxylato bridged Cu(4) moiety linked by a tetradentate bridging urotropine. Complex 2 is a 3D coordination polymer made of pseudo-two-dimensional layers of Co(II) ions linked by malonate anions in syn-anti conformation which are bridged by bidentate urotropine in trans fashion. Complex 1 crystallizes in the orthorhombic system, space group Pmmn, with a = 14.80(2) A, b = 14.54(2) A, c = 7.325(10) A, beta = 90 degrees, and Z = 4. Complex 2 crystallizes in the orthorhombic system, space group Imm2, a = 7.584(11) A, b = 15.80(2) A, c = 6.939(13) A, beta = 90.10 degrees (1), and Z = 4. Variable temperature (300-2 K) magnetic behavior reveals the existence of ferro- and antiferromagnetic interactions in 1 and only antiferromagnetic interactions in 2. The best fitted parameters for complex 1 are J = 13.5 cm(-)(1), J' = -18.1 cm(-)(1), and g = 2.14 considering only intra-Cu(4) interactions through carboxylate and urotropine pathways. In case of complex 2, the fit of the magnetic data considering intralayer interaction through carboxylate pathway as well as interlayer interaction via urotropine pathway gave no satisfactory result at this moment using any model known due to considerable orbital contribution of Co(II) ions to the magnetic moment and its complicated structure. Assuming isolated Co(II) ions (without any coupling, J = 0) the shape of the chi(M)T curve fits well with experimental data except at very low temperatures.

Journal ArticleDOI
TL;DR: In this paper, a three-dimensional coordination polymer with a mixed-valence localized copper(I,II) dimeric unit, [Cu2(4pya)3]n (4-pya = 4-pyridinecarboxylate), was synthesized via a simultaneous in-situa redox and hydrolysis reaction of Cu(II) and 4-cyanopyridine and crystallographically characterized to be a twofold interpenetrated threedimensional coordination network with a cubic [Cu16(4 pya)12] building unit.

Journal ArticleDOI
TL;DR: Well-aligned gamma-MnO(2) nanowires, growing along the [0 0 2] axis, have successfully been prepared by selecting an appropriate coordination polymer [[Mn(SO(4))(4,4'-bpy)(H( 2)O)(2)](n)] as precursor, and further observations show the ordered alignment of Nanowires' tops and such well-aligned nanowire provide more possible applications in lithium batteries.
Abstract: A new coordination-polymer-precursor route has been developed to synthesize nanowires under hydrothermal conditions. In the present work, well-aligned gamma-MnO(2) nanowires, growing along the [0 0 2] axis, have successfully been prepared by selecting an appropriate coordination polymer [[Mn(SO(4))(4,4'-bpy)(H(2)O)(2)](n)] as precursor. In comparison with the experimental results from other coordination-polymer precursors, it is found that only [[Mn(SO(4))(4,4'-bpy)(H(2)O)(2)](n)] is appropriate for the formation of gamma-MnO(2) crystal lattices during the process of oxidization. The IR absorption spectra of as-obtained precipitates at different reaction intervals minutely describe the reaction process, due to the different coordination abilities of ligands in the coordination polymer. More evidence about the mechanism will be further explored in the future study. Further observations show the ordered alignment of nanowires' tops and such well-aligned nanowires provide more possible applications in lithium batteries.

Journal ArticleDOI
TL;DR: A novel chainlike coordination polymer [Cu(II)(2,2'-bipy)(H(2)O)(2)Al(OH)(6)Mo(6)O(18)](n)()( n)()(-), provides the first example of an extended structure based on an Anderson type of polyanion and a transition metal complex with organic ligand.
Abstract: A novel chainlike coordination polymer [CuII(2,2‘-bipy)(H2O)2Al(OH)6Mo6O18]nn-, formed from a heteropolyanion [Al(OH)6Mo6O18]3- as a building unit and a copper(II) complex fragment, [CuII(2,2‘-bipy)(H2O)2]2+, as a linker, provides the first example of an extended structure based on an Anderson type of polyanion and a transition metal complex with organic ligand. The intra- and interchain O−H···O hydrogen-bonding interactions are seemingly responsible for the spiral shape of this chain. Crystal data: triclinic space group P1, a = 11.2253(18) A, b = 14.5194(17) A, c = 15.2672(10) A, α = 112.191(8)°, β = 106.693(9)°, γ = 93.916(13)°, and Z = 2.

Journal ArticleDOI
TL;DR: The most attractive structural feature of 1 and 2 is that they both exhibit an infinite chiral chainlike structure with 2(1) helices along the b axis.
Abstract: A new family of single-stranded helices coordination polymers with mixed ligands, [M2(phen)2(e,a-cis-1,4-chdc)2(H2O)2]n (1, M = Co; 2, M = Ni; chdc = cyclohexanedicarboxylic acid; phen = 1,10-phenanthroline), were prepared under hydrothermal conditions and characterized by elemental analyses, IR spectra, TG analysis, and single-crystal X-ray diffraction analysis X-ray crystal structural analyses reveal that 1 and 2 are isomorphic and belong to the monoclinic system C40H36Co2N4O10, P21/c, a = 100566(5) A, b = 88843(5) A, c = 202912(14) A, β = 100052(3)°, Z = 2 for 1; and C40H36Ni2N4O10, P21/c, a = 98921(6) A, b = 90151(4) A, c = 201628(17) A, β = 10031(2)°, Z = 2 for 2 In the structures of 1 and 2, the 1,4-chdc ligand possesses only one kind of e,a-cis-conformation although there are both cis- and trans-conformations in the raw material Two oxygen atoms of one carboxyl in 1,4-chdc ligand and another oxygen atom of contraposition carboxyl link adjacent Co or Ni atoms into an infinite 1-D zigzag

Journal ArticleDOI
TL;DR: In this article, the authors investigated the room-temperature proton conductivity, coordination geometry, and pore-diameter distribution of the title Cu(II) coordination polymer and revealed that the present Cu coordination polymer was revealed to possess porous space of about 6 A, which includes much water molecules more than 10H2O per unit cell.

Journal ArticleDOI
TL;DR: In this paper, a new strategy for the large-scale synthesis of modified metallosupra- molecular poly(ethylene oxide)s on the basis of the metal-induced self-assembly was presented.
Abstract: High-molecular-weight poly(ethylene oxide)s are utilized for a wide variety of different applications. Here we present a new strategy for the large-scale synthesis of modified metallosupra- molecular poly(ethylene oxide)s on the basis of the metal-induced self-assembly of bis(2,2':6',2''-terpyrid- 4'-yl)-poly(ethylene oxide)179. The influence of different metal ions (cadmium(II), copper(II), cobalt(II), nickel(II), iron(II)) on the degree of polymerization and the resulting molecular weight were evaluated. Elaborated reaction conditions allow easy access to high-molecular-weight iron(II) coordination polymers via self-organization. The polymers were characterized in detail utilizing 1H NMR, UV/vis spectroscopy, MALDI-TOF-MS, and viscosity measurements. The molecular weight was estimated on the basis of concentration-dependent viscosity measurements to about 80 000 g/mol. Furthermore, the morphology of the utilized telechelic bis(2,2':6',2''-terpyrid-4'-yl)-poly(ethylene oxide)179 and the corresponding coordination polymer was investigated using atomic force microscopy. In particular, the influence of complex formation on the morphology was investigated.

Journal ArticleDOI
TL;DR: In this paper, a self-assembly between the octacyanometalate {Nb(CN)8}4- and {ML}2+ complexes was found to be controlled by the {ML] module for which the equatorial coordination sites are blocked by a macrocyclic ligand.
Abstract: A nanosized octadecaheteronuclear aggregate, [{NiL2}12{Nb(CN)8}6(H2O)6], and a 1-D coordination polymer, [{MnL1}2{Nb(CN)8}(H2O)]∞, have been obtained by self-assembly between the octacyanometalate {Nb(CN)8}4- and {ML}2+ complexes. The dimensionality of the supramolecular architectures was found to be controlled by the {ML} module for which the equatorial coordination sites are blocked by a macrocyclic ligand. The crystal structures and magnetic properties for both the compounds are described.

Journal ArticleDOI
TL;DR: In this article, a 2D grid framework containing a dimer as the corner unit is proposed for Cd(ClO4)2·(6H2O) with 4-[2-(2-pyridyl)ethenyl]benzonitrile (2-PEBN) and 2]-2-(4-cyanophenyl)-8-quinolinolate(pyridine)cadmium(II) polymers.
Abstract: The hydrothermal hydrolysis reactions of Cd(ClO4)2·(6H2O) with 4-[2-(2-pyridyl)ethenyl]benzonitrile (2-PEBN) and 2-[2-(4-cyanophenyl)ethenyl]-8-quinolinol (2-CEQH) afforded two coordination polymers aquabis{4-[2-(2-pyridyl)ethenyl]benzoate}cadmium(II) (1) and 2-[2-(4-carboxylatophenyl)ethenyl]-8-quinolinolate(pyridine)cadmium(II) (2), respectively. Complexes 1 and 2 display strong blue and red fluorescent emission, respectively. Both 1 and 2 have a 2-D grid framework containing a dimer as the corner unit. Crystal data for 1: monoclinic, P21/c, a = 15.2411(2), b = 19.8651(2), c = 15.6929(1) A, α = β = 90, γ = 96.961(1)°; for 2: monoclinic, P21/c, a = 11.9219(1), b = 8.9515(1), c = 18.8204(1)A, α = γ = 90.00, β = 104.372(1)°. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)

Journal ArticleDOI
TL;DR: Assemblies of 1-methyl-1',2-bis(4-pyridyl)ethene (mpe) and Co(NCS)(2) afford three isomeric framework networks and different topological features depending on the assembly conditions, which observe isomerism control and solid-to-solid transformation phenomena.
Abstract: Assemblies of 1-methyl-1‘,2-bis(4-pyridyl)ethene (mpe) and Co(NCS)2 afford three isomeric framework networks and different topological features depending on the assembly conditions Isomerism control and solid-to-solid transformation phenomena are observed among them

Journal ArticleDOI
TL;DR: Reaction of achiral 2,5-diphenyl-3,4-di(3-pyridyl)cyclopenta-2, 4-dien-1-one (2) with ZnCl2 and HgBr2 afforded the helically chiral coordination polymers [(2)ZnCl 2]infinity and [2)Hg Br2] infinity, which show spontaneous chiral resolution, forming colonies of homochiral crystals

Journal ArticleDOI
TL;DR: In this paper, self-assembly of HgI2 with a semirigid ditopic "Z" type ligand affords the zigzag chains that interweave into a clothlike 2D network in a 2O/2U fashion.

Journal ArticleDOI
TL;DR: In this article, the reaction of Nallyl-N′-dimethylimidazolium iodide with Ag2O in CH2Cl2 leads to the coordination polymer [Ag(carbene)2]2[Ag4I6] (2), which consists of the cation and anionic infinite one-dimensional chain.

Journal ArticleDOI
TL;DR: In this article, metal complexes of haxaazatriphenylene (hat) and its derivatives are reviewed, focusing on assembled structures based on their X-ray crystallographic structures.

Journal ArticleDOI
TL;DR: In this paper, the first spin-crossover coordination polymeric polymeric solver was presented, which is a spin-Crossover coordination polymer of formula [Fe(pyim)2(bpy)](ClO4)2·2C2H5OH, where pyim = 2-(2-pyridyl)imidazole and bpy = 4,4...
Abstract: We report on the synthesis and characterization of a first iron(II) spin-crossover coordination polymer of formula [Fe(pyim)2(bpy)](ClO4)2·2C2H5OH, where pyim = 2-(2-pyridyl)imidazole and bpy = 4,4...

Journal ArticleDOI
TL;DR: In this paper, the reaction of Co(NCS)2 with 1-methyl-1′-(4pyridyl)-2-(4-pyrimidyl)ethylene (mppe) in different solvents yields two kinds of novel coordination polymer structures, one of them shows an unprecedented interpenetrating structure with both 2D and 3D topological isomers.

Journal ArticleDOI
TL;DR: In this article, a novel coordination polymer [Co3(btec)(C2O4)(H2O)2]n (1; btec = 1,2,4,5-benzenetetracarboxylate) has been hydrothermally synthesized and characterized by IR, XPS, XRPD, TG analysis and single-crystal X-ray diffraction.
Abstract: A novel coordination polymer [Co3(btec)(C2O4)(H2O)2]n (1; btec = 1,2,4,5-benzenetetracarboxylate) has been hydrothermally synthesized and characterized by IR, XPS, XRPD, TG analysis and single-crystal X-ray diffraction. The structural analysis reveals that 1 exhibits a new three-dimensional metal-organic framework constructed from two-dimensional parallel interpenetrating networks based on trinuclear cobalt cluster building blocks. Such interpenetrating composite networks in 1 represent the first example in the {M-btec} (M = transition metal) system. Variable-temperature magnetic susceptibility measurements indicate an antiferromagnetic behavior in 1. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)

Journal ArticleDOI
TL;DR: The equilibrium between digold and tetragold rings and a ring-opened oligomer and polymer is established by NMR and ESI-MS studies in solution and by structure determinations in the solid state.

Journal ArticleDOI
TL;DR: The self-assembly of metallosupramolecules from reactions of flexible 2-pyridyl ligands and silver salts is described, and the examination of its solution shows that this coordination polymer is formed via the solution-based discrete metallocyclic species.
Abstract: The self-assembly of metallosupramolecules from reactions of flexible 2-pyridyl ligands and silver salts is described. When 1,3-bis(2-pyridyl)propane (L1), tris[(2-pyridyl)methyl]methane (L2), and 1,3-bis(2-pyridyl)-2-tolylpropane (L3) are used in combination with silver ions, novel discrete metallocyclic complexes are formed in crystals. Moreover, the self-assembly of 1,3-bis(2-pyridyl)-2-phenylpropane (L4) with silver nitrate yields a coordination polymer. The examination of its solution shows that this coordination polymer is formed via the solution-based discrete metallocyclic species.

Journal ArticleDOI
TL;DR: In this article, a laser-induced high-resolution spectrum (resolution: 2 cm−1) of 3 was obtained, which showed two Eu3+ sites in 3, which is in agreement with the results of single-crystal X-ray diffraction studies of 3.
Abstract: Lanthanide complexes with a one-dimensional chain, [Ln2(dpdc)3(H2O)2]n [Ln = La (1), Pr (2), Eu (3), Tb (4); dpdc = 2,2′-diphenyldicarboxylate] were obtained by hydrothermal reaction of lanthanide(III) chlorides and 2,2′-diphenyldicarboxylic acid, and characterized by X-ray diffraction The crystal structure data reveal that they are isostructural In the asymmetric unit, the two Ln3+ ions are both eight-coordinate but they have different coordination environments Lanthanide ions arranged in a zigzag manner are bridged by the dpdc ligands into a 1-D chain, while the structure appears like a pinwheel viewed along the c axis In these complexes, 2,2′-diphenyldicarboxylate anions exhibit tetradentate and pentadentate coordination modes A laser-induced highresolution spectrum (resolution: 02 cm−1) of 3 was obtained, which shows two Eu3+ sites in 3 This is in agreement with the results of single-crystal X-ray diffraction studies of 3 (© Wiley-VCH Verlag GmbH & Co KGaA, 69451 Weinheim, Germany, 2003)