scholarly journals Reversible switching between positive and negative thermal expansion in a metal–organic framework DUT-49

2020 ◽  
Vol 8 (39) ◽  
pp. 20420-20428
Author(s):  
Bikash Garai ◽  
Volodymyr Bon ◽  
Anastasia Efimova ◽  
Martin Gerlach ◽  
Irena Senkovska ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Single Crystal ◽  
Metal Organic Framework ◽  
Negative Thermal Expansion ◽  
X Ray Diffraction ◽  
Guest Molecules ◽  
X Ray ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
Organic Framework

Reversible switching between positive and negative thermal expansion of a mesoporous metal-organic framework DUT-49 has been demonstrated and studied by synchrotron single-crystal X-ray diffraction with different guest molecules in the pores.

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.

Single Crystal X-ray Diffraction Studies of Carbon Dioxide and Fuel-Related Gases Adsorbed on the Small Pore Scandium Terephthalate Metal Organic Framework, Sc2(O2CC6H4CO2)3

Langmuir ◽  
2009 ◽  
Vol 25 (6) ◽  
pp. 3618-3626 ◽  
Author(s):  
Stuart R. Miller ◽  
Paul A. Wright ◽  
Thomas Devic ◽  
Christian Serre ◽  
Gérard Férey ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Single Crystal ◽  
Metal Organic Framework ◽  
X Ray Diffraction ◽  
X Ray ◽  
Small Pore ◽  
Metal Organic ◽  
Organic Framework

A Mn(II) Metal-Organic Framework Constructed from a Tetrahedral Silicon-Cored Ligand

2013 ◽  
Vol 275-277 ◽  
pp. 2367-2370
Author(s):  
Qing Yu Ma ◽  
Rui Fang Guan ◽  
Guo Zhong Li ◽  
Deng Xu Wang
Keyword(s):  
Single Crystal ◽  
Metal Organic Framework ◽  
Diffusion Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Slow Diffusion ◽  
Sheet Structure ◽  
Metal Organic ◽  
1D Chains ◽  
Organic Framework

A novel metal-organic framework, MnCl2(BIPS)2•2CH3OH•2H2O (1) were synthesized from MnCl2 and a tetrahedral silicon-cored ligand, Me2Si(p-C6H4-imdazol-1-yl)2 (BIPS) under the slow diffusion method. The structure was determined by single-crystal X-ray diffraction. Complex 1 is a 2D sheet structure constructed from 1D chains with 34-atom metallamacrocycles.

scholarly journals Single crystal structure and photocatalytic behavior of grafted uranyl on the Zr-node of a pyrene-based metal–organic framework

CrystEngComm ◽  
2020 ◽  
Vol 22 (11) ◽  
pp. 2097-2102 ◽  
Author(s):  
Julia G. Knapp ◽  
Xuan Zhang ◽  
Tatyana Elkin ◽  
Laura E. Wolfsberg ◽  
Sylvia L. Hanna ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Single Crystal ◽  
Metal Organic Framework ◽  
Uranyl Ion ◽  
Single Crystal Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Photo Oxidation ◽  
Metal Organic ◽  
Organic Framework

The zirconium MOF NU-1000 was post-synthetically modified through solvothermal deposition to include the uranyl ion and characterized via single-crystal X-ray diffraction; photo-oxidation was also performed.

A zinc(II) metal–organic framework with a novel topology formed from 4,4′,4′′-nitrilotribenzoate and 4,4′-bipyridine ligands

2015 ◽  
Vol 71 (9) ◽  
pp. 799-803 ◽  
Author(s):  
Meng Zhao ◽  
Jian Su ◽  
Jun Zhang ◽  
Jie-Ying Wu ◽  
Yu-Peng Tian
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Solvothermal Method ◽  
Metal Organic Framework ◽  
Topological Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Paddle Wheel ◽  
Metal Organic ◽  
Organic Framework

A metal–organic framework with a novel topology, poly[sesqui(μ2-4,4′-bipyridine)bis(dimethylformamide)bis(μ4-4,4′,4′′-nitrilotribenzoato)trizinc(II)], [Zn3(C21H12NO6)2(C10H8N2)1.5(C3H7NO)2]n, was obtained by the solvothermal method using 4,4′,4′′-nitrilotribenzoic acid and 4,4′-bipyridine (bipy). The structure, determined by single-crystal X-ray diffraction analysis, possesses three kinds of crystallographically independent ZnIIcations, as well as binuclear Zn2(COO)4(bipy)2paddle-wheel clusters, and can be reduced to a novel topology of a (3,3,6)-connected 3-nodal net, with the Schläfli symbol {5.62}4{52.6}4{58.87} according to the topological analysis.

A 2-D Metal–Organic Framework Based on Linear Trinuclear Copper Cluster Units: Syntheses, Structures and Magnetic Properties

2018 ◽  
Vol 42 (4) ◽  
pp. 198-201 ◽  
Author(s):  
Liping Wang ◽  
Erpeng Zhang ◽  
Xiaoli Zhou ◽  
Yufei Wang ◽  
Yanli Liu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Coordination Polymer ◽  
Single Crystal ◽  
Metal Organic Framework ◽  
Copper Cluster ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Organic ◽  
Organic Framework

The coordination polymer [Cu3(tci)2(phen)2] n (H3tci = 1,3,5-tris(2-carboxyethyl)isocyanurate; phen = 1,10-phenanthroline) has been synthesised. Single-crystal X-ray diffraction studies have shown that the polymer displays a 2-D metal–organic framework based on linear trinuclear copper cluster units, and its magnetic properties indicate antiferromagnetic interactions.

Novel metal–organic framework with tunable fluorescence property: supramolecular signaling platform for polynitrophenolics

2015 ◽  
Vol 44 (14) ◽  
pp. 6348-6352 ◽  
Author(s):  
M. Venkateswarulu ◽  
Avijit Pramanik ◽  
Rik Rani Koner
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Metal Organic Framework ◽  
Fluorescence Property ◽  
Spectroscopic Techniques ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Organic ◽  
Organic Framework

With the aid of a rotational C3-symmetric tricarboxytriphenylamine based ligand, a new Cd-MOF was synthesized and characterized by various spectroscopic techniques as well as by single-crystal X-ray diffraction analysis.

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