Assembly and property of four 2D layer-like coordination polymers with different structural features derived from bis(3-pyridylformyl)piperazineligand and aromatic dicarboxylic acids with nitro group

CrystEngComm ◽  
2012 ◽  
Vol 14 (3) ◽  
pp. 1001-1009 ◽  
Author(s):  
Xiu-Li Wang ◽  
Bao Mu ◽  
Hong-Yan Lin ◽  
Guo-Cheng Liu ◽  
Ai-Xiang Tian ◽  
...  
Keyword(s):  
Nitro Group ◽  
Coordination Polymers ◽  
Dicarboxylic Acids ◽  
Structural Features ◽  
Aromatic Dicarboxylic Acids

Four cobalt(ii) coordination polymers with diverse topologies derived from flexible bis(benzimidazole) and aromatic dicarboxylic acids: syntheses, crystal structures and catalytic properties

RSC Advances ◽  
2014 ◽  
Vol 4 (106) ◽  
pp. 61281-61289 ◽  
Author(s):  
Xiao Xiao Wang ◽  
Baoyi Yu ◽  
Kristof Van Hecke ◽  
Guang Hua Cui
Keyword(s):  
Dicarboxylic Acid ◽  
Crystal Structures ◽  
Coordination Polymers ◽  
Catalytic Properties ◽  
Hydrothermal Reaction ◽  
Metal Organic Frameworks ◽  
Dicarboxylic Acids ◽  
Metal Organic ◽  
Aromatic Dicarboxylic Acids

Four metal–organic frameworks (MOFs) were obtained from the hydrothermal reaction of Co(ii) and with dicarboxylic acid and flexible bis(5,6-dimethylbenzimidazole) and characterized. The four MOFs exhibit distinct 2D or 3D structural frameworks.

Effects of two benzenedicarboxylic acids on the construction of CdII coordination polymers incorporating a flexible N-donor ligand

2019 ◽  
Vol 75 (6) ◽  
pp. 643-649 ◽  
Author(s):  
Xiao-Fei Li ◽  
Di Cheng ◽  
Xiang-Ru Meng ◽  
Huai-Xia Yang
Keyword(s):  
Coordination Polymers ◽  
Dicarboxylic Acids ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mixed Ligands ◽  
Structural Framework ◽  
Dimensional Network ◽  
Metal Organic ◽  
Aromatic Dicarboxylic Acids ◽  
Diffraction Patterns

Compared with the monomorphic type of ligand, combining mixed ligands in one coordination polymer offers greater tunability of the structural framework. Employment of N-heterocyclic ligands and aromatic polycarboxylates is an effective approach for the construction of metal–organic frameworks (MOFs). Two new coordination polymers incorporating both 2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole (imb) and benzenedicarboxylic acid isomers, namely, catena-poly[[[di-μ-chlorido-bis[(2-carboxybenzoato-κ2 O 1,O 1′)cadmium(II)]]-bis{μ-2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole-κ2 N:N′}] dihydrate], {[Cd(C8H5O4)Cl(C11H10N4)]·H2O} n , (I), and poly[[aqua(μ2-benzene-1,3-dicarboxylato-κ3 O 1,O 1′:O 3){μ2-2-[(1H-imidazol-1-yl)methyl]-1H-benzimidazole-κ2 N:N′}cadmium(II)] dihydrate], {[Cd(C8H4O4)(C11H10N4)(H2O)]·2H2O} n , (II), have been prepared and structurally characterized by single-crystal X-ray diffraction. In polymer (I), imb ligands bridge CdII ions, forming a one-dimensional chain, and 2-carboxybenzoate anions coordinate to the CdII ions in a terminal fashion. Polymer (II) exhibits a two-dimensional network structure in which imb ligands and the benzene-1,3-dicarboxylate anions join CdII ions co-operatively. This indicates that changing of the aromatic dicarboxylic acids can result in polymers with different compositions and architectures. Moreover, their IR spectra, PXRD (powder X-ray diffraction) patterns, thermogravimetric analyses and fluorescence properties were also investigated.

Design and Characterization of Novel Dirhodium Coordination Polymers - The Impact of Ligand Size on Selectivity in Asymmetric Cyclopropanation

2021 ◽  
Author(s):  
Zhenzhong Li ◽  
Lorenz Roesler ◽  
Till Wissel ◽  
Hergen Breitzke ◽  
Kathrin Hofmann ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Ligand Exchange ◽  
Dicarboxylic Acids ◽  
Sem Images ◽  
Asymmetric Cyclopropanation ◽  
The Impact

Three chiral dirhodium coordination polymers Rh2-Ln (n=1-3) have been synthesized via ligand exchange between dirhodium trifluoroacetate Rh2(TFA)4 and differently sized chiral dicarboxylic acids derived from L-tert-leucine. SEM images indicate that...

Ca-Tetrafluorophthalate and Sr-isophthalate: mechanochemical synthesis and characterization in comparison with other Ca-and Sr-coordination polymers

2018 ◽  
Vol 47 (16) ◽  
pp. 5743-5754 ◽  
Author(s):  
Abdal-Azim Al-Terkawi ◽  
Gudrun Scholz ◽  
Franziska Emmerling ◽  
Erhard Kemnitz
Keyword(s):  
Coordination Polymers ◽  
Mechanochemical Synthesis ◽  
Dicarboxylic Acids ◽  
Synthesis And Characterization

Ca-tetrafluorophthalate and Sr-isophthalate were obtained by milling. Ca- and Sr-CPs based on tetrafluorobenzene-dicarboxylic acids and their fluorine-free analogs are compared.

Synthesis and characterization of new cardo poly(ether amide)s containing 9(10H)-anthrone units

2020 ◽  
Vol 32 (9) ◽  
pp. 1001-1009
Author(s):  
Yi-Sheng Luo ◽  
Qiu-Ying Wang ◽  
Xue-Chun Mao ◽  
Shou-Ri Sheng
Keyword(s):  
Room Temperature ◽  
Dicarboxylic Acids ◽  
Synthesis And Characterization ◽  
Aromatic Diamine ◽  
Polar Solvents ◽  
Glass Transition Temperatures ◽  
Flexible Films ◽  
Step Procedure ◽  
Aromatic Dicarboxylic Acids

A new aromatic diamine, 10,10-bis[4-(4-aminophenoxy)phenyl]-9(10 H)-anthrone (BAPA) has been synthesized from anthrone via three-step procedure. Direct phosphorylation polycondensation of BAPA with various aromatic dicarboxylic acids produced a series of cardo poly(ether amide)s with inherent viscosities of 0.97–1.29 dL g−1. All the polymers were readily soluble in polar solvents such as N-methyl-2-pyrrolidone, N, N-dimethylacetamide (DMAc), and pyridine at room temperature, and afforded transparent, strong, and flexible films upon casting from DMAc solvent. The resulting poly(ether amide)s had glass transition temperatures of 254–316°C, 10% weight loss temperatures of 495–524°C, and char yields of 55–70% at 800°C in nitrogen. These polymers were amorphous and their films exhibited tensile strengths of 81.6–104.7 MPa, tensile moduli of 1.8–2.4 GPa, and elongations at break of 8–15%.

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