scholarly journals A Cd(II) Coordination Polymer Based on Mixed Ligands: Synthesis, Crystal Structure, and Properties

Crystals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 625
Author(s):  
Shuai-Shuai Han ◽  
Zi-Wei He ◽  
Lei Li ◽  
Shui-Sheng Chen
Keyword(s):  
Coordination Polymer ◽  
Hydrothermal Reaction ◽  
Weak Interactions ◽  
Three Dimensional ◽  
Supramolecular Polymer ◽  
X Ray Diffraction ◽  
Mixed Ligands ◽  
2D Structure ◽  
Furandicarboxylic Acid ◽  
The Rich

A new coordination polymer, namely, [Cd(L)(frda)(H2O)]·0.5L·H2O (1) was synthesized by hydrothermal reaction based on mixed multi-N donor 1-(4-(1H-imidazol-5-yl) phenyl)-1H-1,2,4-triazole (L) and O-donor 2,5-furandicarboxylic acid ligands (H2frda) with CdCl2·2.5H2O. Compound 1 was characterized by single-crystal x-ray diffraction, elemental analysis, and IR spectroscopy. In 1, both the multi-N donor and O-donor frda2− ligands act as linear two-connectors to bridge Cd(II) atoms, forming a two-dimensional (2D) layer. Interestingly, the parallel 2D layers stack in an AAA···mode, and the infinite one-dimensional (1D) channels formed along the a-axis direction, where the uncoordinated L molecules were embedded in the void. Furthermore, the weak interactions including the rich hydrogen bonding and π−π stacking interactions progress the 2D structure into a three-dimensional (3D) supramolecular polymer. Diffuse reflectance spectra and the luminescent property were also investigated.

scholarly journals Synthesis, Crystal Structure, and Properties of a New Coordination Polymer Built from N/O-Donor Mixed Ligands

Crystals ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 372
Author(s):  
Mei-An Zhu ◽  
Shuai-Shuai Han ◽  
Feng Deng ◽  
Jia-Le Li ◽  
Shui-Sheng Chen
Keyword(s):  
Coordination Polymer ◽  
Weak Interactions ◽  
Three Dimensional ◽  
Luminescent Properties ◽  
Tridentate Ligand ◽  
Supramolecular Polymer ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mixed Ligands ◽  
Benzenedicarboxylic Acid

The coordination polymer, namely, [Cd(H2L)(nobda)]n (1) was prepared by the reaction of Cd(NO3)2·4H2O with 4-amino-1,2-benzenedicarboxylic acid (H2nobda) and 1,4-di(1H-imidazol-4-yl)benzene (H2L), and characterized by single-crystal X-ray diffraction, elemental analysis, infrared (IR) spectroscopy, thermogravimetric analysis, and powder X-ray diffraction (PXRD). The carboxylic acid of H2nobda ligands was completely deprotonated to be nobda2− anions, which act as tridentate ligand to connect the Cd2+ to form two-dimensional (2D) network, while the neutral H2L ligands serve as a linear didentate bridge to connect two adjacent Cd2+ ions upper and down the 2D layer. The adjacent 2D layers were further linked into the three-dimensional (3D) supramolecular polymer by the weak interactions such as hydrogen bonds and π−π stacking interactions. The ultraviolet-visible (UV-vis) absorption spectra and luminescent properties in the solid state at room temperature have been investigated.

A three-dimensional manganese(II) coordination polymer with two functional properties: magnetism and photochemical detection

2021 ◽  
Vol 77 (12) ◽  
Author(s):  
Dan Zhao ◽  
Yanyan An ◽  
Tingting Guo ◽  
Juanzhi Yan ◽  
Danmei Song
Keyword(s):  
Coordination Polymer ◽  
Hydrothermal Reaction ◽  
Three Dimensional ◽  
Building Blocks ◽  
Photoluminescence Properties ◽  
X Ray Diffraction ◽  
Detection Mechanism ◽  
Susceptibility Data ◽  
Dichromate Ions ◽  
Ditopic Ligand

Hydrothermal reaction of Mn2+ with the ditopic ligand 2,5-bis(1H-1,2,4-triazol-1-yl)benzoic acid (Hdtba) resulted in the complex poly[aqua[μ3-2,5-bis(1H-1,2,4-triazol-1-yl)benzoato-κ3 N 4:N 4′:O]chloridomanganese(II)] monohydrate], {[Mn(C11H7N6O2)Cl(H2O)]·H2O} n , (I). Coordination polymer I has been characterized by X-ray diffraction, IR spectroscopy, elemental analysis, thermogravimetry and susceptibility measurements. The topology of I corresponds to a three-dimensional (3,6)-conn net linked by {Mn2Cl2(COO)2} building blocks and dtba− anions. Significant antiferromagnetic exchange is observed within the dinuclear {Mn2Cl2(COO)2} subunits. A fit of the susceptibility data resulted in the magnetic parameters g = 1.93 and J = −1.52. Studies of the photoluminescence properties revealed that I represents a promising luminescence sensor for sensitively detecting dichromate ions in aqueous solution. The associated photochemical detection mechanism was studied in detail.

scholarly journals Synthesis, Crystal Structure, and Properties of a Zn(II) Coordination Polymer Based on a Difunctional Ligand Containing Triazolyl and Carboxyl Groups

Crystals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 424 ◽  
Author(s):  
Jia-Le Li ◽  
Wei-Dong Li ◽  
Zi-Wei He ◽  
Shuai-Shuai Han ◽  
Shui-Sheng Chen
Keyword(s):  
Coordination Polymer ◽  
Weak Interactions ◽  
Layer Structure ◽  
Three Dimensional ◽  
Stacking Interactions ◽  
Structure And Properties ◽  
X Ray Diffraction ◽  
Visible Spectroscopy ◽  
X Ray ◽  
Uv Visible

A new compound, namely, [Zn(L)2]n (1) was obtained by the reaction of 2-methyl-4-(4H-1,2,4-triazol-4-yl) benzoic acid (HL) with ZnSO4·7H2O, and the compound was characterized by single-crystal X-ray diffraction, infrared spectroscopy, elemental analysis, powder X-ray diffraction (PXRD), and thermogravimetric analysis. The linear HL ligands were deprotonated to be L− anions and act as two-connectors to link Zn2+ to form a two-dimensional (2D) lay structure with (4, 4) topology. The large vacancy of 2D framework allows another layer structure to interpenetrate, resulting in the formation of 2D + 2D → 2D parallel interpenetration in 1. The weak interactions, such as hydrogen bonding and π–π stacking interactions, connect the adjacent 2D layers into a three-dimensional (3D) coordination polymer. The solid-state UV-visible spectroscopy and luminescent property have also been studied.

Synthesis and Crystal Structure of a Novel 3D Sm(III) Coordination Polymer with Mixed Ligands

2013 ◽  
Vol 750-752 ◽  
pp. 1765-1768
Author(s):  
Shu Ju Wang ◽  
Yan Wen Tian ◽  
Li Xin You ◽  
Ya Guang Sun
Keyword(s):  
Coordination Polymer ◽  
Three Dimensional ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
Synthesis And Crystal Structure ◽  
Mixed Ligands ◽  
Ft Ir ◽  
Complex Forms ◽  
3D Framework

The coordination polymer, [Sm2(HPyImDC)2Ox (H2O)2·6H2n [H3PyImDC = 2-(pyridine-3-yl)-1H-4,5-imidazoledicarboxylic acid, Ox = oxalate], has been synthesized under hydrothermal conditions and characterized by elemental analysis, FT-IR and single crystal X-ray diffraction. It crystallizes in monoclinic, space group C2/c with a = 28.166(6), b = 6.9970(14), c = 16.655(3) Å, V = 2685.4(9) Å3, Z = 4, Dc= 2.298 g/cm3, μ(MoKα) = 4.428 mm-1, F(000) = 1852, the final R = 0.0412 and wR = 0.1010. The complex forms a three-dimensional (3D) framework structure.

A samarium hybrid with porphyrin and amino acid as mixed ligands: Electrochemical and photophysical properties

2015 ◽  
Vol 19 (10) ◽  
pp. 1140-1146 ◽  
Author(s):  
Yun-Peng Pei ◽  
Jian-Gen Huang ◽  
Hua-Long Chen ◽  
Han-Mao Kuang ◽  
Jie Zhou ◽  
...  
Keyword(s):  
Amino Acid ◽  
Hydrothermal Reaction ◽  
Photophysical Properties ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mixed Ligands ◽  
Porphyrin Macrocycle ◽  
Ft Ir ◽  
Emission Quantum Yield

A samarium hybrid with porphyrin and amino acid as mixed ligands {[Sm(His)(H2O)][Sm(H3O)3](H2TPPS)2} • 5H2O (1) (His = histidine; H6TPPS = tetra(4-sulfonatophenyl)porphyrin) has been synthesized via a hydrothermal reaction and characterized by single-crystal X-ray diffraction. Compound 1is crystallized in the space group [Formula: see text] of the triclinic system. Compound 1is characteristic of a three-dimensional (3-D) open framework with the samarium ions in two types of coordinating environments and a saddle-distorted nonplanar porphyrin macrocycle. Compound 1 exhibits fluorescence in the red region. The fluorescence lifetime of 1 is 15.65 ns and the emission quantum yield is 4.1%. The CV/DPV, UV-vis and FT-IR are also reported in detail.

A new CdII coordination polymer with a self-penetrating architecture induced by the molecular conformation of a rigid bithiophene ligand

2018 ◽  
Vol 74 (2) ◽  
pp. 218-223 ◽  
Author(s):  
Ning-Ning Ji ◽  
Zhi-Qiang Shi ◽  
Hai-Liang Hu
Keyword(s):  
Coordination Polymer ◽  
Single Crystal ◽  
Coordination Polymers ◽  
Molecular Conformation ◽  
Topological Analysis ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Design And Synthesis ◽  
Mixed Ligands

The design and synthesis of coordination polymers with a self-penetrating architecture has attracted much interest not only due to their interesting structures but also due to their potential applications. 5,5′-Bis(pyridin-4-yl)-2,2′-bithiophene (bpbp), as a conjugated bithiophene ligand, can exhibit trans and cis conformations and this can lead to the construction of a self-penetrating architecture. In addition, the semi-rigid ancillary ligand 4,4′-oxybis(benzoic acid) (H2oba) can adopt different coordination modes, resulting in coordination polymers with high-dimensional skeletons. A new CdII coordination polymer based on mixed ligands, namely poly[diaquapentakis[μ-5,5′-bis(pyridin-4-yl)-2,2′-bithiophene-κ2 N:N′]bis(nitrato-κ2 O,O′)tetrakis(μ3-4,4′-oxydibenzoato)-κ10 O:O,O′:O′′,O′′′;κ6 O:O′:O′′-pentacadmium(II)], [Cd5(C14H14O5)4(NO3)2(C18H12N2S2)5(H2O)2] n , (I), has been synthesized under solvothermal conditions and characterized by single-crystal X-ray diffraction, IR spectroscopy and elemental analysis. Single-crystal X-ray diffraction indicates that there are three crystallographically independent CdII cations, three bpbp ligands, two deprotonated oba2− ligands, one nitrate ligand and one coordinated water molecule in the asymmetric unit. One CdII centre is seven-coordinated, exhibiting a distorted {CdN2O5} pentagonal bipyramidal geometry, while the other two Cd centres are both six-coordinated, showing slightly distorted {CdN2O4} octahedral geometries. The most interesting feature is the co-existence of trans and cis conformations in a single net, allowing structural interpenetration via self-threading and yet the expected self-penetrating structure was obtained. Topological analysis shows that the whole three-dimensional framework can be classified as a 3-nodal (4,6,6)-c net with Schläfli symbol {613.82}2{66}, which is a new topology. Furthermore, the luminescence properties of (I) were examined in the solid state at room temperature.

A (4,4)-connected zinc(II) coordination polymer constructed with the flexible 2-carboxy phenoxyacetate ligand: synthesis, conformation alteration and fluorescent properties

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jun-Xia Li ◽  
Tian Zhang ◽  
He-Jun Chen ◽  
Zhong-Xiang Du
Keyword(s):  
Coordination Polymer ◽  
Hydrothermal Reaction ◽  
Layer Structure ◽  
Fluorescence Emission ◽  
Phenoxyacetic Acid ◽  
X Ray Diffraction ◽  
Fluorescent Properties ◽  
Sulfate Heptahydrate ◽  
X Ray ◽  
Related Compounds

Abstract A new binary ZnII coordination polymer, [Zn(2-cpa)(H2O)] n (2D-Zn) has been prepared by a 120 °C hydrothermal reaction of zinc(II) sulfate heptahydrate and 2-carboxy phenoxyacetic acid (2-H2cpa) in the presence of potassium hydroxide. Single-crystal X-ray diffraction analysis shows that the ZnII ion is located in a deformed ZnO6 octahedron bonded by one water and three 2-carboxy phenoxyacetate (2-cpa) ligands. The 2-cpa exhibits pentadentate double bridging chelate-μ 3 coordination mode and connects adjacent ZnII ions to generate a corrugated (4,4)-connected layer structure. The structures, conformation of 2-cpa and photoluminescence spectra for 2D-Zn have been carefully analyzed and compared with its two closely related compounds ̶ 1D [Zn(2-cpa)(H2O)] n (1D-Zn) and mononuclear [Zn(2-cpa)(H2O)3] (0D-Zn). The results showed that the conformation of 2-cpa in 2D-Zn has the maximum alteration and the corresponding fluorescence emission peak of 2D-Zn has the largest red-shift of 62 nm compared with that of free 2-H2cpa.

Hydrothermal synthesis, crystal structure and properties of a two-dimensional uranyl coordination polymer based on a flexible zwitterionic ligand

2018 ◽  
Vol 74 (3) ◽  
pp. 366-371 ◽  
Author(s):  
Wen Cui ◽  
Ruyu Wang ◽  
Xi Shu ◽  
Yu Fan ◽  
Yang Liu ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Hydrothermal Reaction ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Uranyl Compounds ◽  
X Ray ◽  
Potential Applications ◽  
Ft Ir ◽  
Fuel Reprocessing ◽  
Ft Ir Spectroscopy

The interaction between the uranyl cation, (UO2)2+, and organic species is of interest due to the potential applications of the resulting compounds with regard to nuclear waste disposal and nuclear fuel reprocessing. The hydrothermal reaction of various uranyl compounds with flexible zwitterionic 1,1′-[1,4-phenylenebis(methylene)]bis(pyridin-1-ium-4-carboxylate) dihydrochloride (Bpmb·2HCl) in deionized water containing drops of H2SO4resulted in the formation of a novel two-dimensional uranyl coordination polymer, namely poly[tetraoxido{μ2-1,1′-[1,4-phenylenebis(methylene)]bis(pyridin-1-ium-4-carboxylate)}di-μ3-sulfato-diuranium(VI)], [(UO2)2(SO4)2(C20H16N2O4)]n, (1). Single-crystal X-ray diffraction reveals that this coordination polymer exhibits a layered arrangement and the (UO2)2+centre is coordinated by five equatorial O atoms. The structure was further characterized by FT–IR spectroscopy, powder X-ray diffraction (PXRD) and thermogravimetric analysis (TGA). The polymer shows high thermal stability up to 696 K. Furthermore, the photoluminescence properties of (1) has also been studied, showing it to exhibit a typical uranyl fluorescence.

Metal-Controlled Assembly Tuning Coordination Polymers with Flexible 2-(1H-imidazole-1-yl)acetic Acid (Hima)

2006 ◽  
Vol 59 (9) ◽  
pp. 647 ◽  
Author(s):  
Yong-Tao Wang ◽  
Gui-Mei Tang ◽  
Da-Wei Qin
Keyword(s):  
Coordination Polymers ◽  
Weak Interactions ◽  
Critical Role ◽  
Three Dimensional ◽  
Supramolecular Network ◽  
Water Medium ◽  
New Materials ◽  
X Ray Diffraction ◽  
X Ray ◽  
Supramolecular Networks

Three new inorganic–organic coordination polymers based on a versatile linking unit 2-(1H-imidazole-1-yl)acetate (Hima) and divalent Mn(ii), Ni(ii), and Cu(ii) ions, exhibiting two kinds of two dimensionalities with different topological structures, have been prepared in water medium and structurally characterized by single-crystal X-ray diffraction analysis. Reaction of MnCl2·4H2O and Ni(NO3)2·6H2O with Hima yielded neutral two-dimensional (2D) coordination polymers [M(ima)2]n, M = Mn(ii) 1, and Ni(ii) 2 with isostructural 2D coordination polymers possessing (3,6) topology structures, which further stack into three-dimensional (3D) supramolecular networks through C–H···O weak interactions. However, when Cu(NO3)2·4H2O was used, a neutral 2D coordination polymer [Cu(ima)2]n 3 consisting of rhombus units was generated, which showed a 3D supramolecular network through C–H···O weak interactions. Among these polymers, the building block ima anion exhibits different coordination modes. These results indicate that the versatile nature of this flexible ligand, together with the coordination preferences of the metal ions, plays a critical role in construction of these novel coordination polymers. Spectral and thermal properties of these new materials have also been investigated.

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