Synthesis and Structure of a Two-Dimensional Metal-Organic Framework: [Fe(C7H3NO4)(H2O)2]n

2013 ◽  
Vol 790 ◽  
pp. 33-36 ◽  
Author(s):  
Hong Sheng Wang ◽  
Hai Feng Suo
Keyword(s):  
Coordination Polymer ◽  
Metal Organic Framework ◽  
Organic Ligand ◽  
Hydrothermal Condition ◽  
Tricarboxylic Acid ◽  
Two Dimensional ◽  
Monoclinic Crystal ◽  
Distorted Trigonal Bipyramid ◽  
Metal Organic ◽  
Oxygen Atoms

A two-dimensional coordination polymer [Fe (C7H3NO4)(H2O)2]n was prepared with pyridine-2,3,5-tricarboxylic acid (H3pta) and iron (II) perchlorate at hydrothermal condition. Pyridine-2,3,5-tricarboxylic acid was decomposed to form the organic ligand of pyridine-3,5-dicarboxylate anion appeared in 1. Its crystal structure was determined by single crystal X-ray diffraction. The complex belongs to monoclinic crystal system, C2/c space group with a = 0.9945(2) nm, b = 1.2067(3) nm, c = 0.74125(15) nm, α = γ = 90°, β = 105.859(3)°, V = 0.8557(3) nm3, Z = 4, D =1.995 Mg/ m3. The Fe (II) ion is five-coordinated by one nitrogen atom and four oxygen atoms. Furthermore, each Fe (II) ion bond with two other oxygen atoms on carboxyl groups by weak coordination action. The five coordination atoms form a distorted trigonal bipyramid coordination geometry. These coordination geometries are interlinked into a 2D alveolate net structure. The 2D layers are further connected into a 3D coordination polymer by hydrogen bonds.

Two-dimensional metal–organic frameworks with high oxidation states for efficient electrocatalytic urea oxidation

2017 ◽  
Vol 53 (79) ◽  
pp. 10906-10909 ◽  
Author(s):  
Dongdong Zhu ◽  
Chunxian Guo ◽  
Jinlong Liu ◽  
Liang Wang ◽  
Yi Du ◽  
...  
Keyword(s):  
Oxidation Reaction ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Organic Ligand ◽  
Oxidation States ◽  
Two Dimensional ◽  
Benzenedicarboxylic Acid ◽  
High Oxidation ◽  
Metal Organic ◽  
Nickel Species

A two-dimensional metal–organic framework comprising nickel species and an organic ligand of benzenedicarboxylic acid is fabricated and explored as an electrocatalyst for urea oxidation reaction.

scholarly journals Room temperature synthesis of luminescent crystalline Cu-BTC coordination polymer and metal-organic framework

2021 ◽  
Author(s):  
SHIRAZ AHMED SIDDIQUI ◽  
Alexander Roller ◽  
Hidetsugu Shiozawa
Keyword(s):  
Coordination Chemistry ◽  
Coordination Polymer ◽  
Room Temperature ◽  
Metal Organic Framework ◽  
Tricarboxylic Acid ◽  
Temperature Synthesis ◽  
Crystalline Materials ◽  
Metal Organic ◽  
Optical Applications ◽  
Work Coordination

Synthesis of crystalline materials is elemental in the field of coordination chemistry towards optical applications. In the present work, coordination between copper and benzene-1,3,5-tricarboxylic acid (BTC) is controlled by adjusting...

Two dimensional Ti-based metal-organic framework with polar oxygen atoms on the pore surface for efficient gas separation

Polyhedron ◽  
2020 ◽  
Vol 190 ◽  
pp. 114771
Author(s):  
Youlie Cai ◽  
Lijia Zou ◽  
Qinghong Ji ◽  
Jiayi Yong ◽  
Xuefeng Qian ◽  
...  
Keyword(s):  
Gas Separation ◽  
Metal Organic Framework ◽  
Pore Surface ◽  
Two Dimensional ◽  
Metal Organic ◽  
Organic Framework ◽  
Oxygen Atoms

scholarly journals A Dual-Emitting Two-Dimensional Nickel-Based Metal-Organic Framework Nanosheets: Eu3+/Ag+ Functionalization Synthesis and Ratiometric Sensing in Aqueous Solution

2021 ◽  
Author(s):  
Yun Shu ◽  
Tao Dai ◽  
Qiuyu Ye ◽  
Dangqin Jin ◽  
Qin Xu ◽  
...  
Keyword(s):  
Color Change ◽  
Fluorescent Sensor ◽  
Metal Organic Framework ◽  
Organic Ligand ◽  
Disease Diagnosis ◽  
Ph Effects ◽  
Two Dimensional ◽  
Dual Emission ◽  
Metal Organic ◽  
Organic Framework

Abstract Using two-dimensional (2D) nickel-based metal organic framework (Ni-MOF) nanosheets as a matrix, Eu3+ and Ag+ were incorporated to synthesize Ag/Eu@Ni-MOF with double luminescence centers of Eu3+ ion (615 nm) and organic ligand (524 nm). And a ratiometric luminescence sensor is constructed based on Ag/Eu@Ni-MOF for sensitive detection of biothiols in aqueous solutions. The dual-emissive fluorescence properties can be tuned by changing the amounts of Ag+ ions doping. The results of temperature and pH effects on the fluorescence of Ag/Eu@Ni-MOF indicates that the Ag/Eu@Ni-MOF is a temperature-sensitive material and the fluorescence of Ag/Eu@Ni-MOF can keep stable over a wide pH range. Due to the binding of -SH in Cys and GSH with Ag+, the ligand luminescence was significantly inhibited by weakening the Ag+ influence on the energy transfer process in the MOFs. Therefore, ratiometric fluorescent sensing of biomolecular thiols was realized based on the dual-emission Ag/Eu@Ni-MOF. More importantly, the fluorescence color change can be observed with naked eyes to realize visual detection. The ratiometric fluorescent sensor exhibits high performance for Cys and GSH detection with a wide linear range of 5-250 μM and a relatively low detection limit of 0.20 μM and 0.17 μM, respectively. Furthermore, the biothiols content in human serum was determined with satisfactory results. It proves the Ni-MOF nanosheets can be used as a stable matrix for construction luminescent MOFs for the first time, and validate the great potential of Ag/Eu@Ni-MOF as a ratiometric fluorescent probe for point-of-care testing (POCT) in disease diagnosis.

scholarly journals Synthesis, structure and hydrogen sorption properties of a pyrazine-bridged copper(I) nitrate metal-organic framework

2019 ◽  
Vol 10 (3) ◽  
pp. 195-200
Author(s):  
Emmanuel Ngwang Nfor ◽  
Andrew David Burrows ◽  
Bridget Ndoye Ndosiri ◽  
Luke Lawrence Keenan ◽  
Offiong Efanga Offiong
Keyword(s):  
Thermal Analysis ◽  
Coordination Polymer ◽  
Metal Organic Framework ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
X Ray ◽  
Triclinic System ◽  
Dimensional Network ◽  
Metal Organic ◽  
Ft Ir

A new copper(I) pyrazine-bridged coordination polymer [Cu2(pyz)3(NO3)2]·2DMF] (pyz = pyrazine) (1) has been synthesized and characterized by FT-IR, TG/DTG, DSC and single crystal X-ray diffraction techniques. The X-ray crystallographic result reveals a two-dimensional network structure containing hexagonal pores. Thermal analysis of compound 1 reveals it is stable to 380 °C, and gas sorption studies showed that it adsorbs 1.04 wt% hydrogen at 1 atm and 77 K. Compound 1 crystallizes in a triclinic system, space group P-1 (no. 2), a = 7.9550(2) Å, b = 7.9810(2) Å, c = 11.0660(3) Å, α = 76.328(1)°, β = 71.115(1)°, γ = 84.577(1)°, V = 645.79(3) Å3, Z = 2, T = 150(2) K, μ(MoKα) = 1.709 mm-1, Dcalc = 1.639 g/cm3, 11111 reflections measured (7° ≤ 2Θ ≤ 54.96°), 2951 unique (Rint = 0.0539) which were used in all calculations. The final R1 was 0.0346 (>2σ(I)) and wR2 was 0.0727 (all data).

The coordination polymer poly[[aqua(μ-oxalato)[1H-1,2,4-triazole-5(4H)-thione]cadmium(II)] monohydrate]

2014 ◽  
Vol 70 (2) ◽  
pp. 182-184 ◽  
Author(s):  
Qian Liang ◽  
Yu-Lin Wang ◽  
Yan Zhao ◽  
Gao-Juan Cao
Keyword(s):  
Hydrogen Bond ◽  
Coordination Polymer ◽  
Water Molecule ◽  
Layered Structure ◽  
Metal Organic Framework ◽  
Title Complex ◽  
Two Dimensional ◽  
Hydrogen Bond Interactions ◽  
Metal Organic ◽  
Organic Framework

The title complex, {[Cd(C2O4)(C2H3N3S)(H2O)]·H2O}n, has a two-dimensional metal–organic framework, with the CdIIcation coordinated by three oxalate ligands, a 1H-1,2,4-triazole-5(4H)-thione (H2trzS) ligand and a water molecule. The CdO6S and oxalate units form an extended two-dimensional layered structure, with the terminal H2trzS ligands bonded to the CdIIsites through the thione S atoms. Hydrogen-bond interactions exist between adjacent layers.

scholarly journals Crystal structure of a two-dimensional coordination polymer of formula [Zn(NDC)(DEF)] (H2NDC is naphthalene-2,6-dicarboxylic acid and DEF is N,N-diethylformamide)

2019 ◽  
Vol 75 (11) ◽  
pp. 1759-1762
Author(s):  
Nathalie Saffon-Merceron ◽  
Alain Vigroux ◽  
Pascal Hoffmann
Keyword(s):  
Crystal Structure ◽  
Coordination Polymer ◽  
Formic Acid ◽  
Dicarboxylic Acid ◽  
Metal Organic Framework ◽  
Two Dimensional ◽  
Metal Source ◽  
Zinc Metal ◽  
Secondary Building Units ◽  
Metal Organic

A zinc metal–organic framework, namely poly[bis(N,N-diethylformamide)(μ4-naphthalene-2,6-dicarboxylato)(μ2-naphthalene-2,6-dicarboxylato)dizinc(II)], [Zn(C12H6O4)(C15H11NO)] n , built from windmill-type secondary building units and forming zigzag shaped two-dimensional stacked layers, has been solvothermally synthesized from naphthalene-2,6-dicarboxylic acid and zinc(II) acetate as the metal source in N,N-diethylformamide containing small amounts of formic acid.

Synthesis and Structure of a Clathrated Two-Dimensional Metal-Organic Framework: [Cd(4,4'-bpy)2(H2O)2](ClO4)2·(L)2·H2O (L = Bis(1-pyrazinylethylidene)hydrazine)

2008 ◽  
Vol 73 (1) ◽  
pp. 24-31
Author(s):  
Dayu Wu ◽  
Genhua Wu ◽  
Wei Huang ◽  
Zhuqing Wang
Keyword(s):  
Metal Organic Framework ◽  
Channel Structure ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Guest Molecules ◽  
X Ray ◽  
Square Planar ◽  
Metal Organic ◽  
Aqueous Meoh ◽  
Organic Framework

The compound [Cd(4,4'-bpy)2(H2O)2](ClO4)2·(L)2 was obtained by the reaction of Cd(ClO4)2, bis(1-pyrazinylethylidene)hydrazine (L) and 4,4'-bipyridine in aqueous MeOH. Single-crystal X-ray diffraction has revealed its two-dimensional metal-organic framework. The 2-D layers superpose on each other, giving a channel structure. The square planar grids consist of two pairs of shared edges with Cd(II) ion and a 4,4'-bipyridine molecule each vertex and side, respectively. The square cavity has a dimension of 11.817 × 11.781 Å. Two guest molecules of bis(1-pyrazinylethylidene)hydrazine are clathrated in every hydrophobic host cavity, being further stabilized by π-π stacking and hydrogen bonding. The results suggest that the hydrazine molecules present in the network serve as structure-directing templates in the formation of crystal structures.

Two-Dimensional Metal–Organic Framework Nanosheets as an Enzyme Inhibitor: Modulation of the α-Chymotrypsin Activity

2017 ◽  
Vol 139 (24) ◽  
pp. 8312-8319 ◽  
Author(s):  
Ming Xu ◽  
Shuai Yuan ◽  
Xin-Yu Chen ◽  
Yu-Jie Chang ◽  
Gregory Day ◽  
...  
Keyword(s):  
Enzyme Inhibitor ◽  
Metal Organic Framework ◽  
Two Dimensional ◽  
Chymotrypsin Activity ◽  
Metal Organic ◽  
Organic Framework
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