Porous coordination polymer of copper(II) assembled from mixed organic ligands pyridine-2,4-dicarboxylic acid and trans-1,2-bis(4-pyridyl)ethylene: Synthesis, crystal structure and magnetic study

A new complex involving 1,3-bisbenzyl-2-oxoimidazoline-4,5-dicarboxylic acid (H2L) and a cobalt(ii) metal ion designated [Co(L)(H2O)2]n has been synthesized under solvothermal conditions and characterized.

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A three-dimensional coordination polymer based on the Zn4(μ3-OH)2unit: poly[[(μ4-benzene-1,4-dicarboxylato)bis(μ3-benzene-1,4-dicarboxylato)bis(μ3-hydroxido)bis(1,10-phenanthroline-5,6-dione)tetrazinc] dihydrate]

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229615000467 ◽

2015 ◽

Vol 71 (2) ◽

pp. 136-139

Author(s):

Meng Wen ◽

Zu-Ping Xiao ◽

Chun-Ya Wang ◽

Xi-He Huang

Keyword(s):

Crystal Structure ◽

Hydrogen Bonding ◽

Coordination Polymer ◽

Dicarboxylic Acid ◽

Title Compound ◽

Three Dimensional ◽

Water Molecules ◽

Hydrogen Bonding Interactions ◽

Carboxylate Groups ◽

Form Part

The title compound, {[Zn4(C8H4O4)3(OH)2(C12H6N2O2)2]·2H2O}n, has been prepared hydrothermally by the reaction of Zn(NO3)2·6H2O with benzene-1,4-dicarboxylic acid (H2bdc) and 1,10-phenanthroline-5,6-dione (pdon) in H2O. In the crystal structure, a tetranuclear Zn4(OH)2fragment is located on a crystallographic inversion centre which relates two subunits, each containing a [ZnN2O4] octahedron and a [ZnO4] tetrahedron bridged by a μ3-OH group. The pdon ligand chelates to zinc through its two N atoms to form part of the [ZnN2O4] octahedron. The two crystallographically independent bdc2−ligands are fully deprotonated and adopt μ3-κO:κO′:κO′′ and μ4-κO:κO′:κO′′:κO′′′ coordination modes, bridging three or four ZnIIcations, respectively, from two Zn4(OH)2units. The Zn4(OH)2fragment connects six neighbouring tetranuclear units through four μ3-bdc2−and two μ4-bdc2−ligands, forming a three-dimensional framework with uninodal 6-connected α-Po topology, in which the tetranuclear Zn4(OH)2units are considered as 6-connected nodes and the bdc2−ligands act as linkers. The uncoordinated water molecules are located on opposite sides of the Zn4(OH)2unit and are connected to it through hydrogen-bonding interactions involving hydroxide and carboxylate groups. The structure is further stabilized by extensive π–π interactions between the pdon and μ4-bdc2−ligands.

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A 3D Gd–Ag coordination polymer constructed from pyridine-3,5-dicarboxylic acid: Synthesis, crystal structure and magnetic properties

Inorganic Chemistry Communications ◽

10.1016/j.inoche.2009.07.012 ◽

2009 ◽

Vol 12 (9) ◽

pp. 895-897 ◽

Cited By ~ 10

Author(s):

Guang-Xiang Liu ◽

Xiao-Ming Ren ◽

Heng Xu ◽

Sadafumi Nishihara ◽

Rong-Yi Huang

Keyword(s):

Crystal Structure ◽

Magnetic Properties ◽

Coordination Polymer ◽

Dicarboxylic Acid ◽

Acid Synthesis

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A new two-dimensional CdIIcoordination polymer based on 2-(1H-imidazol-1-ylmethyl)-6-methyl-1H-benzimidazole and benzene-1,2-dicarboxylate: synthesis, crystal structure and characterization

Acta Crystallographica Section C Structural Chemistry ◽

10.1107/s2053229617013080 ◽

2017 ◽

Vol 73 (10) ◽

pp. 828-832 ◽

Cited By ~ 7

Author(s):

Huai-Xia Yang ◽

Yan-Qiu Yang ◽

Di Cheng ◽

Ya-Xue Li ◽

Xiang-Ru Meng

Keyword(s):

Crystal Structure ◽

Coordination Polymer ◽

Hydrogen Bonds ◽

Water Molecule ◽

Spectroscopic Properties ◽

Organic Ligands ◽

Two Dimensional ◽

Coordination Environment ◽

Dimensional Network ◽

Ir Spectroscopic

In the construction of coordination polymers, many factors can influence the formation of the final architectures, such as the nature of the metal centres, the organic ligands and the counter-anions. In the coordination polymer poly[aqua(μ-benzene-1,2-dicarboxylato-κ4O1,O1′:O2,O2′)[μ-2-(1H-imidazol-1-ylmethyl)-6-methyl-1H-benzimidazole-κ2N2:N3]cadmium(II)], [Cd(C12H12N4)(C8H4O4)(H2O)]nor [Cd(immb)(1,2-bdic)(H2O)]n, each CdIIion is seven-coordinated by two N atoms from two symmetry-related 2-(1H-imidazol-1-ylmethyl)-6-methyl-1H-benzimidazole (immb) ligands, by four O atoms from two symmetry-related benzene-1,2-dicarboxylate (1,2-bdic2−) ligands and by one water molecule, leading to a CdN2O5distorted pentagonal bipyramidal coordination environment. The immb and 1,2-bdic2−ligands bridge CdIIions and form a two-dimensional network structure. O—H...O and N—H...O hydrogen bonds stabilize the structure. In addition, the IR spectroscopic properties, PXRD patterns, thermogravimetric behaviour and fluorescence properties of the title polymer have been investigated.

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