A cadmium(II) coordination polymer with both polyrotaxane and polycatenane features constructed by a V-shaped semi-rigid ligand: synthesis and fluorescence properties

2017 ◽  
Vol 73 (7) ◽  
pp. 541-545
Author(s):  
Hua Xie ◽  
Wang-Jian Fang ◽  
Xiao-Qiang Yao
Keyword(s):  
Solid State ◽  
Coordination Polymer ◽  
Water Molecule ◽  
Self Assembly ◽  
Three Dimensional ◽  
The Self ◽  
Two Dimensional ◽  
Photoluminescence Properties ◽  
Hydrothermal Conditions ◽  
Parallel Fashion

One of the most interesting phenomena in coordination polymers (CPs) is the co-existence of different interlaced motifs. However, CPs having two different interlaced motifs at the same time are still rare. Colourless block-shaped crystals of the two-dimensional polymer poly[[aqua(μ2-naphthalene-2,6-dicarboxylato){μ2-4,4′-[oxybis(4,1-phenylene)]dipyridine}cadmium(II)] monohydrate], {[Cd(C12H6O4)(C22H16N2O)(H2O)]·H2O} n , (I), was synthesized under hydrothermal conditions by the self-assembly of 4,4′-[oxybis(4,1-phenylene)]dipyridine (OPY) with CdII in the presence of naphthalene-2,6-dicarboxylic acid (H2ndc). Each CdII ion is six-coordinated by two N atoms from the pyridine rings of two OPY ligands and by four O atoms, three of which are from two ndc2− ligands and one of which is from a water molecule. In (I), every two identical two-dimensional (2D) 63 layers are interpenetrated in a parallel fashion, resulting in an interesting 2D→2D framework with both polyrotaxane and polycatenane characteristics. The extension of these sheets into a three-dimensional supramolecular net is via O—H...O hydrogen bonds. The solid-state photoluminescence properties of (I) are also discussed.

A new two-dimensional managnese(II) coordination polymer constructed by 2,2′-(1,2-phenylene)bis(1H-imidazole-4,5-dicarboxylate)

2018 ◽  
Vol 74 (5) ◽  
pp. 599-603 ◽  
Author(s):  
Yan-Ju Liu ◽  
Di Cheng ◽  
Ya-Xue Li ◽  
Xiang-Ru Meng ◽  
Huai-Xia Yang
Keyword(s):  
Solid State ◽  
Coordination Polymer ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Coordination Geometry ◽  
Two Dimensional ◽  
Carboxylate Ligands ◽  
Rich Variety ◽  
Distorted Octahedral ◽  
Solvothermal Conditions

In recent years, N-heterocyclic carboxylate ligands have attracted much interest in the preparation of new coordination polymers since they contain N-atom donors, as well as O-atom donors, and have a rich variety of coordination modes which can lead to polymers with intriguing structures and interesting properties. A new two-dimensional coordination polymer, namely poly[[μ3-2,2′-(1,2-phenylene)bis(4-carboxy-1H-imidazole-5-carboxylato)-κ6 O 4,N 3,N 3′,O 4′:O 5:O 5′]manganese(II)], [Mn(C16H8N4O8)] n or [Mn(H4Phbidc)] n , has been synthesized by the reaction of Mn(OAc)2·4H2O (OAc is acetate) with 2,2′-(1,2-phenylene)bis(1H-imidazole-4,5-dicarboxylic acid) (H6Phbidc) under solvothermal conditions. In the polymer, each MnII ion is six-coordinated by two N atoms from one H4Phbidc2− ligand and by four O atoms from three H4Phbidc2− ligands, forming a significantly distorted octahedral MnN2O4 coordination geometry. The MnII ions are linked by hexadentate H4Phbidc2− ligands, leading to a two-dimensional structure parallel to the ac plane. In the crystal, adjacent layers are further connected by N—H...O hydrogen bonds, forming a three-dimensional structure in the solid state.

Syntheses, Crystal Structures and Properties of Two New Manganese(II) Coordination Polymers with Tetrafluorophthalate Ligands

2013 ◽  
Vol 68 (3) ◽  
pp. 277-283 ◽  
Author(s):  
Sheng-Chun Chen ◽  
Jing Qin ◽  
Zhi-Hui Zhang ◽  
Xiao-Xiao Cai ◽  
Jian Gao ◽  
...  
Keyword(s):  
Solid State ◽  
Ir Spectroscopy ◽  
Self Assembly ◽  
The Self ◽  
Photoluminescence Properties ◽  
Double Chain ◽  
Triclinic Space Group ◽  
One Dimensional ◽  
Structures And Properties ◽  
Supramolecular Networks

Two new polymeric MnII complexes, {[Mn(1,2-BDC-F4)(H2O)3](EtOH)}n (1) and [Mn(1,2- BDC-F4)(H2O)2(DMF)]n (2), have been prepared from the reaction of MnII acetate with 3,4,5,6- tetrafluoro-benzene-1,2-dicarboxylic acid (1,2-H2BDC-F4) using different solvents, and characterized by elemental analysis, IR spectroscopy, thermogravimetric (TG) analysis, and single-crystal Xray structure analysis. Both complexes crystallize in the triclinic space group P1̄ and have similar one-dimensional double chain structures, consisting of a unique arrangement of 8-membered and 14- membered rings. The effects of solvent as ligand and/or guest on the self-assembly processes of the supramolecular networks and on their photoluminescence properties in the solid state are discussed.

Two new isostructural mercury(II) complexes involving the N-heterocyclic 1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole ligand: syntheses, structures and properties

2017 ◽  
Vol 73 (4) ◽  
pp. 314-318 ◽  
Author(s):  
Xu Wei ◽  
Jian-Hua Li ◽  
Qiu-Ying Huang ◽  
Xiang-Ru Meng
Keyword(s):  
Solid State ◽  
Hydrogen Bonds ◽  
Ir Spectra ◽  
Self Assembly ◽  
Three Dimensional ◽  
The Self ◽  
X Ray Diffraction ◽  
X Ray ◽  
Heterocyclic Ligand ◽  
Structures And Properties

The unsymmetrical N-heterocyclic ligand 1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole (bmi) has three potential N-atom donors and can act in monodentate or bridging coordination modes in the construction of complexes. In addition, the bmi ligand can adopt different coordination conformations, resulting in complexes with different structures due to the presence of the flexible methylene spacer. Two new complexes, namely bis{1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole-κN3}dibromidomercury(II), [HgBr2(C10H9N5)2], and bis{1-[(benzotriazol-1-yl)methyl]-1H-1,3-imidazole-κN3}diiodidomercury(II), [HgI2(C10H9N5)2], have been synthesized through the self-assembly of bmi with HgBr2or HgI2. Single-crystal X-ray diffraction shows that both complexes are mononuclear structures, in which the bmi ligands coordinate to the HgIIions in monodentate modes. In the solid state, both complexes display three-dimensional networks formed by a combination of hydrogen bonds and π–π interactions. The IR spectra and PXRD patterns of both complexes have also been recorded.

scholarly journals Crystal structure of a CuIIcomplex with a bridging ligand: poly[[pentakis[μ2-1,1′-(butane-1,4-diyl)bis(1H-imidazole)-κ2N3:N3′]dicopper(II)] tetranitrate tetrahydrate]

2014 ◽  
Vol 70 (12) ◽  
pp. 503-506
Author(s):  
Fayuan Wu ◽  
Mengxiang Shang ◽  
Shihua Li ◽  
Yu Zhao
Keyword(s):  
Crystal Structure ◽  
Coordination Polymer ◽  
Three Dimensional ◽  
Inversion Symmetry ◽  
Two Dimensional ◽  
Hydrothermal Conditions ◽  
Bridging Ligand ◽  
Pyramidal Geometry ◽  
Square Pyramidal Geometry ◽  
Entangled Framework

A novel two-dimensional→three-dimensional CuIIcoordination polymer, {[Cu2(C10H14N4)5](NO3)4·4H2O}n, based on the 1,1′-(butane-1,4-diyl)bis(1H-imidazole) (biim) ligand and containing one crystallographically unique CuIIatom, has been synthesized under hydrothermal conditions. The CuIIatom is coordinated by five N atoms from biim ligands, one of which has crystallographically imposed inversion symmetry, giving rise to a slightly distorted CuN5square-pyramidal geometry. The CuIIcations are linked by biim ligands to give a 44layer; the layers are further bridged by biim ligands, generating a double sheet with a thickness of 14.61 Å. The sheet features rhombic Cu4(biim)4windows built up from four CuIIcenters and four biim ligands with dimensions of 14.11 × 14.07 Å2. Each window of a layer is penetrated directly by the biim ligand of the adjacent net, giving a two-dimensional→three-dimensional entangled framework.

Construction and photoluminescence properties of a three-dimensional ZnII coordination network based on naphthalene-1,4-dicarboxylic acid and 1,6-bis(pyridin-3-yl)-1,3,5-hexatriene

2018 ◽  
Vol 74 (9) ◽  
pp. 1053-1057 ◽  
Author(s):  
Qian-Kun Zhou ◽  
Lin Wang ◽  
Yun Xu ◽  
Ni-Ya Li
Keyword(s):  
Dicarboxylic Acid ◽  
Self Assembly ◽  
Three Dimensional ◽  
Square Lattice ◽  
Photoluminescence Properties ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Pyridyl Ligands ◽  
Connected Node

In recent years, coordination polymers constructed from multidentate carboxylate and pyridyl ligands have attracted much attention because these ligands can adopt a rich variety of coordination modes and thus lead to the formation of crystalline products with intriguing structures and interesting properties. A new coordination polymer, namely poly[[μ2-1,6-bis(pyridin-3-yl)-1,3,5-hexatriene-κ2 N:N′](μ3-naphthalene-1,4-dicarboxylato-κ4 O 1,O 1′:O 4:O 4′)zinc(II)], [Zn(C12H6O4)(C16H14N2)] n , has been prepared by the self-assembly of Zn(NO3)2·6H2O, naphthalene-1,4-dicarboxylic acid (1,4-H2ndc) and 1,6-bis(pyridin-3-yl)-1,3,5-hexatriene (3,3′-bphte) under hydrothermal conditions. The title compound has been structurally characterized by IR spectroscopy, elemental analysis, powder X-ray diffraction and single-crystal X-ray diffraction analysis. Each ZnII ion is six-coordinated by four O atoms from three 1,4-ndc2− ligands and by two N atoms from two 3,3′-bphte ligands, forming a distorted octahedral ZnO4N2 coordination geometry. Pairs of ZnII ions are linked by 1,4-ndc2− ligands, leading to the formation of a two-dimensional square lattice (sql) layer extending in the ab plane. In the crystal, adjacent layers are further connected by 3,3′-bphte bridges, generating a three-dimensional architecture. From a topological viewpoint, if each dinuclear zinc unit is considered as a 6-connected node and the 1,4-ndc2− and 3,3′-bphte ligands are regarded as linkers, the structure can be simplified as a unique three-dimensional 6-connected framework with the point symbol 446108. The thermal stability and solid-state photoluminescence properties have also been investigated.

scholarly journals SELF-ASSEMBLY OF THREE-DIMENSIONAL NANOPOROUS CONTAINERS

NANO ◽  
2009 ◽  
Vol 04 (01) ◽  
pp. 1-5 ◽  
Author(s):  
JAIHAI WANG ◽  
MIRA PATEL ◽  
DAVID H. GRACIAS
Keyword(s):  
Melting Point ◽  
Self Assembly ◽  
Three Dimensional ◽  
The Self ◽  
Second Step ◽  
Two Dimensional ◽  
The Third ◽  
Open Window ◽  
Side Walls ◽  
Molecular Separations

We describe a strategy to construct three-dimensional (3D) containers with nanoporous walls by the self-assembly of lithographically patterned two-dimensional cruciforms with solder hinges. The first step involves fabricating two-dimensional (2D) cruciforms composed of six unlinked patterns: each pattern has an open window. The second step entails photolithographic patterning of solder hinges that connect the cruciform. The third step involves the deposition of polystyrene particles within the windows and the subsequent electrodeposition of metal in the voids between the polystyrene particles. Following the dissolution of the particles, the cruciforms are released from the substrate and heated above the melting point of the solder causing the cruciforms to spontaneously fold up into 3D cubic containers with nanoporous walls. We believe these 3D containers with nanoporous side walls are promising for molecular separations and cell-based therapies.

A new two-dimensional CdII coordination polymer based on 1,3-bis(2-methyl-1H-imidazol-1-yl)benzene and 1,3-phenylenediacetic acid: synthesis, crystal structure and physical properties

2018 ◽  
Vol 74 (12) ◽  
pp. 1576-1580 ◽  
Author(s):  
Ning-Ning Chen ◽  
Jian-Ning Ni ◽  
Jun Wang
Keyword(s):  
Solid State ◽  
Coordination Polymer ◽  
Three Dimensional ◽  
Acid Synthesis ◽  
Dimensional Structure ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Coordination Framework ◽  
Oriented Parallel

A novel two-dimensional CdII coordination framework, poly[[[μ-1,3-bis(2-methyl-1H-imidazol-1-yl)benzene-κ2 N:N′](μ-1,3-phenylenediacetato-κ4 O,O′:O′′,O′′′)cadmium(II)] dihydrate], {[Cd(C10H8O4)(C14H14N4)]·2H2O} n or {[Cd(PDA)(1,3-BMIB)]·2H2O} n [1,3-BMIB is 1,3-bis(2-methyl-1H-imidazol-1-yl)benzene and H2PDA is 1,3-phenylenediacetic acid], has been prepared and characterized using IR, elemental analysis, thermal analysis and single-crystal X-ray diffraction, the latter revealing that the compound is a (4,4) grid coordination polymer with layers oriented parallel to the bc crystal planes. In the crystal, adjacent layers are further connected by O—H...O and C—H...O hydrogen bonds, forming a three-dimensional structure in the solid state. In addition, the compound exhibits strong fluorescence emissions and shows photocatalytic activity for the degradation of methylene blue in the solid state at room temperature.

A new one-dimensional ZnIIcoordination polymer based on 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole and benzene-1,2-dicarboxylate

2015 ◽  
Vol 71 (11) ◽  
pp. 1017-1021 ◽  
Author(s):  
Qiu-Ying Huang ◽  
Wei Liu ◽  
Yi Yang ◽  
Xiang-Ru Meng
Keyword(s):  
Solid State ◽  
Coordination Polymer ◽  
Hydrogen Bonds ◽  
Layered Structure ◽  
Heterocyclic Compounds ◽  
Room Temperature ◽  
Dimensional Chain ◽  
Two Dimensional ◽  
Hydrothermal Conditions ◽  
One Dimensional

Multidentate N-heterocyclic compounds form a variety of metal complexes with many intriguing structures and interesting properties. The title coordination polymer,catena-poly[zinc(II)-bis{μ-2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole}-κ2N3:N3′;N3′:N3-zinc(II)-bis(μ-benzene-1,2-dicarboxylato)-κ2O1:O2;κ3O1,O1′:O2], [Zn2(C8H4O4)2(C11H10N4)2]n, has been synthesized by the reaction of Zn(NO3)2with 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole (imb) and benzene-1,2-dicarboxylic acid (H2bdic) under hydrothermal conditions. There are two crystallographically distinct imb ligands [imb(A) and imb(B)] in the structure which adopt very similar coordination geometries. The imb(A) ligand bridges two symmetry-related Zn1 ions, yielding a binuclear [(Zn1)2{imb(A)}2] unit, and the imb(B) ligand bridges two symmetry-related Zn2 ions resulting in a binuclear [(Zn2)2{imb(B)}2] unit. The above-mentioned binuclear units are further connected alternately by pairs of bridging bdic2−ligands, forming an infinite one-dimensional chain. These one-dimensional chains are further connected through N—H...O hydrogen bonds, leading to a two-dimensional layered structure. In addition, the title polymer exhibits good fluorescence properties in the solid state at room temperature.

Sign in / Sign up

Export Citation Format

Share Document