The crystal structure and photocatalytic properties of a three-dimensional cadmium(II) metal–organic framework: poly[bis(μ3-benzene-1,2-dicarboxylato)[μ2-1,4-bis(pyridin-3-ylmethoxy)benzene]dicadmium(II)]

2016 ◽  
Vol 72 (3) ◽  
pp. 174-178 ◽  
Author(s):  
Cai-Xia Yu ◽  
Yan-Ping Gao ◽  
Xiao-Qing Cui ◽  
Meng-Jiao Guo ◽  
Lei-Lei Liu
Keyword(s):  
Organic Contaminants ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Green Technology ◽  
Coordination Geometry ◽  
Asymmetric Unit ◽  
One Dimensional ◽  
Dimensional Network ◽  
Metal Organic

Photocatalysis is a green technology for the treatment of all kinds of contaminants and has advantages over other treatment methods. Recently, much effort has been devoted to developing new photocatalytic materials based on metal–organic frameworks for use in the degradation of many kinds of organic contaminants. With the aim of searching for more effective photocatalysts, the title three-dimensional coordination polymer, [Cd2(C8H4O4)2(C18H16N2O2)]n, was prepared. The asymmetric unit contains one CdIIcation, one benzene-1,2-dicarboxylate anion (denotedL2−) and half of a centrosymmetric 1,4-bis(pyridin-3-ylmethoxy)benzene ligand (denoted bpmb). Each CdIIcentre is five-coordinated by four carboxylate O atoms from twoL2−ligands and by one N atom from a bpmb ligand, forming a disordered pentagonal pyramidal coordination geometry. The CdIIcentres are interlinked byL2−ligands to form a one-dimensional [Cd2L2]nchain. Adjacent chains are further connected by bpmb linkers, giving rise to a two-dimensional network, and these networks are pillared by bpmb to afford a three-dimensional framework with a 33.42.63.71.81topology. Each grid in the framework has large channels which are filled mainly by the two other equivalent frameworks to form a threefold interpenetrating net. The compound exhibits relatively good photocatalytic activity towards the degradation of methylene blue in aqueous solution under UV irradiation.

scholarly journals Dimethylammonium 2,4,5-tricarboxybenzoate: an example of the decarbonylation ofN,N-dimethylformamide in the presence of a metal and a benzenepolycarboxylic acid. Is zirconium(IV) theTsotsi?

2016 ◽  
Vol 72 (11) ◽  
pp. 1521-1525 ◽  
Author(s):  
S. T. Hulushe ◽  
E. C. Hosten ◽  
G. M. Watkins
Keyword(s):  
Hydrogen Bond ◽  
Metal Organic Framework ◽  
Three Dimensional ◽  
Carboxylate Group ◽  
Tetracarboxylic Acid ◽  
Asymmetric Unit ◽  
Dimensional Network ◽  
Metal Organic ◽  
Unexpected Product ◽  
Intramolecular Hydrogen

The title salt, C2H8N+·C10H5O8−, was the unexpected product of an attempt to prepare a ZrIVmetal–organic framework with benzene-1,2,4,5-tetracarboxylic acid (1,2,4,5-H3B4C). In the reaction, the DMF solvent has been decarbonylated, forming the dimethylammonium cation, with one proton lost from the tetracarboxylic acid. It is proposed that the ZrIVsalt acts as aTsotsior robber, plundering CO from the DMF molecule. The resulting salt crystallizes with two cations and two anions in the asymmetric unit. An intramolecular hydrogen bond forms between a carboxylic acid substituent and the carboxylate group of each of the monodeprotonated (1,2,4,5-H3B4C−) anions. In the crystal, an extensive array of O—H...O, N—H...O and C—H...O hydrogen bonds generates a three-dimensional network, with columns of cations and anions forming along thebaxis.

scholarly journals Crystal structure of catena-poly[[[bis(3-oxo-1,3-diphenylprop-1-enolato-κ2 O,O′)zinc(II)]-μ2-tris[4-(pyridin-3-yl)phenyl]amine-κ2 N:N′] tetrahydrofuran monosolvate]

2019 ◽  
Vol 75 (10) ◽  
pp. 1432-1435
Author(s):  
Yukiyasu Kashiwagi ◽  
Koji Kubono ◽  
Toshiyuki Tamai
Keyword(s):  
Coordination Polymer ◽  
Crystal Packing ◽  
Three Dimensional ◽  
Polymer Chains ◽  
Coordination Geometry ◽  
Asymmetric Unit ◽  
One Dimensional ◽  
Π Interactions ◽  
Dimensional Network ◽  
Sheet Structure

The reaction of bis(3-oxo-1,3-diphenylprop-1-enolato-κ2 O,O′)zinc(II), [Zn(dbm)2], with tris[4-(pyridin-3-yl)phenyl]amine (T3PyA) in tetrahydrofuran (THF) afforded the title crystalline coordination polymer, {[Zn(C15H11O2)2(C33H24N4)]·C4H8O} n . The asymmetric unit contains two independent halves of Zn(dbm)2, one T3PyA and one THF. Each ZnII atom is located on an inversion centre and adopts an elongated octahedral coordination geometry, ligated by four O atoms of two dbm ligands in equatorial positions and by two N atoms of pyridine moieties from two different bridging T3PyA ligands in axial positions. The crystal packing shows a one-dimensional polymer chain in which the two pyridyl groups of the T3PyA ligand bridge two independent Zn atoms of Zn(dbm)2. In the crystal, the coordination polymer chains are linked via C—H...π interactions into a sheet structure parallel to (010). The sheets are cross-linked via further C—H...π interactions into a three-dimensional network. The solvate THF molecule shows disorder over two sets of atomic sites having occupancies of 0.631 (7) and 0.369 (7).

Poly[tetrachlorido{μ4-tetrakis[(imidazol-1-yl)methyl]methane-κ4N3:N3′:N3′′:N3′′′}dizinc(II)] exhibiting a three-dimensional diamond topology

2014 ◽  
Vol 70 (2) ◽  
pp. 194-197 ◽  
Author(s):  
Jian Su ◽  
Liu-Di Yao ◽  
Jun Zhang ◽  
Jie-Ying Wu ◽  
Yu-Peng Tian
Keyword(s):  
Metal Organic Framework ◽  
Three Dimensional ◽  
Zinc Nitrate ◽  
Coordination Geometry ◽  
Tetrahedral Coordination ◽  
Asymmetric Unit ◽  
Metal Organic ◽  
Acidic Conditions ◽  
Topological Framework ◽  
Distorted Tetrahedral Coordination

The title novel noncentrosymmetric metal–organic framework, [Zn2Cl4(C17H20N8)]n, was prepared solvothermally using the tetradentate tetrakis[(imidazol-1-yl)methyl]methane (tiym) linker in the presence of zinc nitrate under acidic conditions. The asymmetric unit contains one ZnIIcation, two Cl−anions and a quarter of each of two symmetry-independent tiym ligands. Each ZnIIcation is four-coordinated by two Cl−anions and two imidazole N atoms from two tiym ligands, forming a distorted tetrahedral coordination geometry. The tetrahedral tetradentate tiym linker has a quaternary C atom located on a crystallographic \overline{4} axis. With its four peripheral imidazole N atoms, the linkers are bridged by four [ZnCl2] subunits to generate a three-dimensional diamond topological framework, which is represented by the Schläfli symbol {66}. To the best of our knowledge, the title compound is the first example of a non-interpenetrating diamond net based on the tiym ligand.

Supramolecular architecture of metal–organic frameworks involving dinuclear copper paddle-wheel complexes

2013 ◽  
Vol 69 (12) ◽  
pp. 1498-1502 ◽  
Author(s):  
Sundaramoorthy Gomathi ◽  
Packianathan Thomas Muthiah
Keyword(s):  
Metal Organic Framework ◽  
Solvent Molecule ◽  
Three Dimensional ◽  
Coordination Geometry ◽  
Asymmetric Unit ◽  
Dinuclear Copper ◽  
Paddle Wheel ◽  
Water Solvent ◽  
Carboxylate Groups ◽  
Metal Organic

The two centrosymmetric dinuclear copper paddle-wheel complexes tetrakis(μ-4-hydroxybenzoato-κ2O:O′)bis[aquacopper(II)] dimethylformamide disolvate dihydrate, [Cu2(C7H5O3)4(H2O)2]·2C3H7NO·2H2O, (I), and tetrakis(μ-4-methoxybenzoato-κ2O:O′)bis[(dimethylformamide-κO)copper(II)], [Cu2(C8H7O3)4(C3H7NO)2], (II), crystallize with half of the dinuclear paddle-wheel cage unit in the asymmetric unit and, in addition, complex (I) has one dimethylformamide (DMF) and one water solvent molecule in the asymmetric unit. In both (I) and (II), two CuIIions are bridged by foursyn,syn-η1:η1:μ carboxylate groups, showing a paddle-wheel cage-type structure with a square-pyramidal coordination geometry. The equatorial positions of (I) and (II) are occupied by the carboxylate groups of 4-hydroxy- and 4-methoxybenzoate ligands, and the axial positions are occupied by aqua and DMF ligands, respectively. The three-dimensional supramolecular metal–organic framework of (I) consists of three differentR22(20) and anR44(36) ring motif formedviaO—H...O and OW—HW...O hydrogen bonds. Complex (II) simply packs as molecular species.

Diamondoid framework solid with Sn(OCH3)2–tetrapyridylporphyrin linkers, CuInodes and [CuICl2]−counter-ions

2015 ◽  
Vol 71 (8) ◽  
pp. 706-711 ◽  
Author(s):  
Hatem M. Titi ◽  
Israel Goldberg
Keyword(s):  
Metal Organic Framework ◽  
Three Dimensional ◽  
Organic Ligand ◽  
Coordination Geometry ◽  
Tetrahedral Coordination ◽  
Asymmetric Unit ◽  
Counter Ions ◽  
Metal Organic ◽  
Water Crystallization ◽  
Positively Charged

We report on the synthesis of a new metal–organic framework (MOF) composed of Sn(OCH3)2–tetrakis(pyridin-4-yl)porphyrin linkers, Cu+connecting nodes and [CuCl2]−counter-ions, namely poly[[bis(methanolato-κO)[μ5-5,10,15,20-tetrakis(pyridin-4-yl)porphyrin-κ81κN5:1′κN10:1′′κN15:1′′′κN20:2κ4N21,N22,N23,N24]copper(I)tin(II)] dichloridocuprate(I)], [CuSn(C40H24N8)(CH3O)2][CuCl2]. Its crystal structure consists of a single-framework coordination polymer of the organic ligand and the CuIions. The latter are characterized by a tetrahedral coordination geometry [with CN (coordination number) = 4], linking to the pyridyl N-atom sites of four different ligands and imparting to the positively charged polymeric assembly a diamondoid PtS-type topology. Correspondingly, every porphyrin unit is coordinated to four different CuIconnectors. The [CuCl2]−anions occupy the intra-lattice voids, along with disordered molecules of the water crystallization solvent. The asymmetric unit of this structure consists of two halves of the porphyrin scaffold, located on centres of crystallographic inversion, and the Cu+and [CuCl2]−ions. This report provides unique structural evidence for the formation of tetrapyridylporphyrin-based three-dimensional MOFs with a diamondoid architecture that have been observed earlier only on rare occasions.

Solvothermal Synthesis, Structure, Fluorescence and Magnetism Properties of a Novel 3D Metal-Organic Framework Based on Tetranuclear Copper Secondary Building Units

2013 ◽  
Vol 834-836 ◽  
pp. 543-549
Author(s):  
Lei Wu ◽  
Ming Xue ◽  
Gérald Chaplais ◽  
Guang Shan Zhu ◽  
Shi Lun Qiu ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Three Dimensional ◽  
Fluorescence Emission ◽  
Ferromagnetic Interaction ◽  
One Dimensional ◽  
Dimensional Network ◽  
Secondary Building Units ◽  
Metal Organic ◽  
Solvothermal Conditions ◽  
Organic Framework

A novel 3D metal-organic framework based on tetranuclear copper Secondary Building Units, [Cu2(μ3-OH)(4-oip)(DMF)]·DMF·2H2O (JUC-76) (4-oip = 4-hydroxyisophthalic, DMF =N,N-dimethylformamide, and JUC = Jilin University China), has been synthesized under solvothermal conditions. It crystallizes in monoclinic symmetry with space groupP21/n. JUC-76 possesses a three-dimensional network with one-dimensional rhombic channels of approximately 13.6 × 8.5 Å2along the [100] direction. The resulting structure of JUC-76 is a distorted rutile topology with one 3-connected organic node and one 6-connected inorganic node. And its Schläfli symbol is (4·62)2(42·610·83). In addition, JUC-76 exhibits fluorescence emission at 446 nm, and a dominant anti-ferromagnetic interaction between the Cu (II) ions.

Accurate tuning of rare earth metal–organic frameworks with unprecedented topology for white-light emission

2020 ◽  
Vol 8 (4) ◽  
pp. 1374-1379 ◽  
Author(s):  
Yutong Wang ◽  
Kai Zhang ◽  
Xiaokang Wang ◽  
Xuelian Xin ◽  
Xiurong Zhang ◽  
...  
Keyword(s):  
White Light ◽  
Light Emission ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Earth Metal ◽  
White Light Emission ◽  
One Dimensional ◽  
1D Chain ◽  
Secondary Building Units ◽  
Metal Organic

An unprecedented three-dimensional (3D) (3,4,5)-czkf topological framework (UPC-38) with one-dimensional (1D) chain secondary building units exhibits strong white light emission.

One-dimensional CuIand AgIladder-like coordination polymers supported by 2-ethyl-1-(pyridin-3-ylmethyl)-1H-benzimidazole

2013 ◽  
Vol 69 (9) ◽  
pp. 1017-1021
Author(s):  
Liu-cheng Gui ◽  
Guang-ming Liang ◽  
Hua-hong Zou ◽  
Zhong Hou
Keyword(s):  
Hydrogen Bonds ◽  
Metal Ion ◽  
Three Dimensional ◽  
Coordination Geometry ◽  
Tetrahedral Coordination ◽  
Asymmetric Unit ◽  
Counter Anion ◽  
One Dimensional ◽  
Solvent Molecules ◽  
Distorted Tetrahedral Coordination

The title complexes, poly[[bis[μ2-2-ethyl-1-(pyridin-3-ylmethyl)-1H-benzimidazole-κ2N1:N3]copper(I)] tetrafluoroborate acetonitrile monosolvate], {[Cu(C15H15N3)2]BF4·CH3CN}n, (I), and poly[[bis[μ2-2-ethyl-1-(pyridin-3-ylmethyl)-1H-benzimidazole-κ2N1:N3]silver(I)] perchlorate methanol monosolvate], {[Ag(C15H15N3)2]ClO4·CH3OH}n, (II), are isostructural and exhibit one-dimensional ladder-like structures in which each asymmetric unit contains one metal ion (Cu+or Ag+), two 2-ethyl-1-(pyridin-3-ylmethyl)-1H-benzimidazole (bep) ligands, one counter-anion (tetrafluoroborate or perchlorate) and one interstitial molecule (acetonitrile or methanol). Each metal ion exhibits a distorted tetrahedral coordination geometry consisting of two pyridyl and two benzimidazole N atoms from four distinct ligands. Two metal ions are linked by two bep ligands to form a centrosymmetric 18-memberedM2(bep)2metallacycle, while adjacentM2(bep)2metallacycles are further interlinked by another two bep ligands resulting in a ladder-like array. In the extended structure, four adjacent ladder-like arrays are connected together through C—H...F, O—H...O and C—H...O hydrogen bonds between bep ligands, solvent molecules and counter-anions into a three-dimensional supramolecular structure.

Structure andMagnetic Properties of a Three-dimensional Metal-organic Framework: [Co(L)(H2O)2]·H2O

2011 ◽  
Vol 66 (4) ◽  
pp. 355-358
Author(s):  
Man-Sheng Chen ◽  
Yi-Fang Deng ◽  
Zhi-Min Chen ◽  
Chun-Hua Zhang ◽  
Dai-Zhi Kuang
Keyword(s):  
Metal Organic Framework ◽  
Three Dimensional ◽  
Solvothermal Reaction ◽  
Monoclinic Space Group ◽  
Cell Parameters ◽  
Carboxylate Groups ◽  
Dimensional Network ◽  
Metal Organic ◽  
Acid Compound ◽  
Organic Framework

A unique 3D fourfold interpenetrated metal-organic framework, [Co(L)(H2O)2]・H2O (1), has been synthesized by the solvothermal reaction of H2L with Co(NO3)2・6H2O (H2L = 5-(isonicotinamido) isophthalic acid). Compound 1 crystallizes in the monoclinic space group P21/c, with the cell parameters: a = 81301(8), b = 107711(11), c = 167697(16) Å , β = 92.656(2) °, V = 14669(3) Å3, R1 = 0.0325 and wR2 = 0.0833. Its framework has (10,3)-b topology, where the cobalt atoms are alternately bridged by the pyridyl and the carboxylate groups of the L2− ligands into a three-dimensional network. Compound 1 displays antiferromagnetic interactions. Above 40 K, χm −1 obeys the Curie- Weiss law with C = 3.28 emu Kmol−1 andΘ = −0.66 K.

A novel three-dimensional CdIImetal–organic framework based on [Cd6(malonate)6] metallomacrocycles with zeolite SOD (sodalite) topology: poly[ammine-μ3-malonato-cadmium(II)]

2012 ◽  
Vol 68 (3) ◽  
pp. m57-m60
Author(s):  
Shuai Yuan ◽  
Mei-Jiao Liu ◽  
Han-Yi Xie ◽  
Meng-Zhen Xu ◽  
Di Sun
Keyword(s):  
Hydrogen Bonds ◽  
Network Structure ◽  
Metal Organic Framework ◽  
Three Dimensional ◽  
Liquid Diffusion ◽  
Dimensional Network ◽  
Metal Organic ◽  
Point Symbol ◽  
Organic Framework

A novel CdIImetal–organic framework, [Cd(C3H2O4)(NH3)]n, was synthesized by liquid diffusion conducted in the presence of ammonia. The CdIIatom has seven-coordinate O6N pentagonal–bipyramidal geometry. Six CdIIcenters are joined by six malonate ligands to form anS6-symmetric [Cd6(malonate)6] metallomacrocycle, which is further extended through a side-on chelating malonate ligand to form a three-dimensional network. Topologically, each CdIIcenter is connected to four others to yield an infinite three-periodic four-coordinated SOD (sodalite) network with point symbol {42·64}. The overall network structure in the crystal is maintained and stabilized by the presence of N—H...O hydrogen bonds.

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