Hydrothermal Synthesis, Crystal Structures, and Photoluminescent Properties of Metal–Organic Frameworks Derived from 3,5-Bis(benzimidazol-1-yl)pyridine and Dicarboxylic Acids

2014 ◽  
Vol 67 (6) ◽  
pp. 901
Author(s):  
Jiakun Xu ◽  
Xiaochun Sun ◽  
Xingchen Yan ◽  
Dongmei Zhang ◽  
Mi Sun
Keyword(s):  
Hydrothermal Synthesis ◽  
Room Temperature ◽  
Metal Organic Frameworks ◽  
Dicarboxylic Acids ◽  
Single Crystal Diffraction ◽  
X Ray ◽  
Benzenedicarboxylic Acid ◽  
Metal Organic ◽  
Groove Structure ◽  
Metal Coordination Polymers

We successfully synthesized two new metal coordination polymers [Cd3(bdc)3(L)3(H2O)3]n (1) and [Co(tda)(L)]n (2) (H2bdc = 1,2-benzenedicarboxylic acid, H2tda = 2,5-thiophendicarboxylic acid, and L = 3,5-bis(benzimidazol-1-yl)pyridine), which were then characterized by IR, and elemental, X-ray powder diffraction, and X-ray single-crystal diffraction analysis. Complex 1 possesses a uninodal three-connected hcb Shubnikov hexagonal plane net with {63} topology. Complex 2 features a three-connected topological net with {82·10} topology (so-called ‘tongue-and-groove’ structure). A typical T-shaped molecular bilayer motif, which has rarely been reported previously, was successfully constructed by strategically selecting H2tda as the second ligand. In addition, the solid-state photoluminescent spectra of 1 and 2 were measured at room temperature.

scholarly journals Room temperature silylation of alcohols catalyzed by metal organic frameworks

2017 ◽  
Vol 7 (12) ◽  
pp. 2445-2449 ◽  
Author(s):  
Amarajothi Dhakshinamoorthy ◽  
Andrea Santiago-Portillo ◽  
Patricia Concepción ◽  
José R. Herance ◽  
Sergio Navalón ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Room Temperature ◽  
Metal Organic Frameworks ◽  
Aliphatic Alcohols ◽  
Benzenedicarboxylic Acid ◽  
Metal Organic

Commercial Al(OH)(BDC) (BDC: 1,4-benzenedicarboxylic acid) is a suitable heterogeneous catalyst for the silylation of benzylic and aliphatic alcohols by hexamethyldisilazane in toluene at room temperature.

Synthesis, crystal structures, and thermal and spectroscopic properties of two Cd(II) metal-organic frameworks with a versatile ligand

2016 ◽  
Vol 71 (8) ◽  
pp. 909-917 ◽  
Author(s):  
Jia-Ming Li ◽  
Kun-Huan He ◽  
Zhong-Feng Shi ◽  
Hui-Yuan Gao ◽  
Yi-Min Jiang
Keyword(s):  
Room Temperature ◽  
Metal Organic Frameworks ◽  
Spectroscopic Properties ◽  
Supramolecular Architecture ◽  
X Ray Diffraction ◽  
X Ray ◽  
Bridging Ligand ◽  
Hydrogen Bond Interactions ◽  
Distorted Octahedral ◽  
Metal Organic

AbstractTwo new metal-organic frameworks, namely, [Cd(L)(H2O)]n (1) and {[Cd0.5(L)(4,4′-bipy)0.5][Cd0.5(H2O)(4,4′-bipy)0.5]·H2O}n (2), where H2L = N-pyrazinesulfonyl-glycine and 4,4′-bipy = 4,4′-bipyridine, have been synthesized and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental, thermogravimetric, and photoluminescent analysis. X-ray diffraction crystallographic analyses indicate that 1 displays a distorted octahedral metal coordination in a 3-connected (4, 82) topology, while the molecular structure of 2 has a 4-connected (4, 4) topology with two perfectly octahedrally coordinated Cd centers. The L2– ligand serves as a N,N,O-tridentate, μ2-pyrazine-bridging, and μ2-carboxylate-bridging ligand in 1, and as a N,O-bidentate and μ2-carboxylate-bridging ligand in 2. In the crystal, a 3D supramolecular architecture is formed by O–H···O hydrogen bond interactions in 1, but through O–H···O as well as π···π stacking in 2. The two compounds show intense fluorescence in the solid state at room temperature.

Synthesis, crystal structure, luminescence, and photocatalytic properties of a 2D Cu(II) metal-organic frameworks based on 3,5-di(1H-benzimidazol-1-yl)pyridine and 4,4′-oxybis(benzoate) ligands

2020 ◽  
Vol 75 (8) ◽  
pp. 727-732
Author(s):  
Chen Zhang ◽  
Jian-Qing Tao
Keyword(s):  
Crystal Structure ◽  
Thermal Analysis ◽  
Uv Light ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
X Ray Diffraction ◽  
X Ray ◽  
Uv Light Irradiation ◽  
Photocatalytic Activities ◽  
Metal Organic

AbstractA new Cu(II) metal-organic framework, [Cu(L)(OBA)·H2O]n (1) [H2OBA = 4,4′-oxybis(benzoic acid), L = 3,5-di(1H-benzimidazol-1-yl)pyridine] was hydrothermally synthesized and characterized through IR spectroscopy, elemental and thermal analysis and single-crystal X-ray diffraction. Complex 1 is a four-connected uni-nodal 2D net with a (44·62) topology which shows an emission centered at λ ∼393 nm upon excitation at λ = 245 nm. Moreover, complex 1 possesses high photocatalytic activities for the decomposition of Rhodamine B (RhB) under UV light irradiation.

scholarly journals In situ X‐ray Diffraction Investigation of the Crystallisation of Perfluorinated Ce(IV)‐based Metal‐Organic Frameworks with UiO‐66 and MIL‐140 architectures

2021 ◽  
Author(s):  
Stephen J. I. Shearan ◽  
Jannick Jacobsen ◽  
Ferdinando Costantino ◽  
Roberto D’Amato ◽  
Dmitri Novikov ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Organic

Syntheses of series of lanthanide metal−organic frameworks for efficient UV-light-driven dye degradation: experiment and simulation

CrystEngComm ◽  
2021 ◽  
Author(s):  
Fei Yuan ◽  
Haixia Ma ◽  
Chumei Yuan ◽  
Chun-Sheng Zhou ◽  
Huai-Ming Hu ◽  
...  
Keyword(s):  
General Formula ◽  
Dye Degradation ◽  
Uv Light ◽  
Metal Organic Frameworks ◽  
Benzenedicarboxylic Acid ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Experiment And Simulation

Three new Ln(III)-based metal-organic frameworks (MOFs), having general formula [Ln2(L)2(ox)(H2O)2]n (Ln = Nd (1), Sm (2) and Eu (3)) have been synthesized using multifunctional triazole-carboxylate linker 5-(1H-1,2,4-triazol-1-yl)-1,3-benzenedicarboxylic acid (H2L) and...

Synthesis and Characterization of Lanthanide Metal-Organic Frameworks with Perfluorinated Linkers

2016 ◽  
Vol 98 ◽  
pp. 70-74
Author(s):  
Andrius Laurikėnas ◽  
Jurgis Barkauskas ◽  
Aivaras Kareiva
Keyword(s):  
Metal Organic Frameworks ◽  
Aqueous Media ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
Lanthanide Elements ◽  
Diffusion Controlled ◽  
Benzenedicarboxylic Acid ◽  
Metal Organic ◽  
Lanthanide Metal

In this study, lanthanide elements (Ln3+) and 2,3,5,6-tetrafluoro-1,4-benzenedicarboxylic acid (TFBDC) based metal-organic frameworks (MOFs) were synthesized by precipitation and diffusion-controlled precipitation methods. Powders insoluble in aqueous media and polar solvents were obtained. The microstructure and properties of Ln3+ MOFs were evaluated and discussed. X-ray diffraction (XRD) analysis, infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and fluorescence spectroscopy (FLS) were carried out to characterize Ln3+ MOF's crystallinity, the microstructure, chemical composition and optical properties.

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