High CO2 Adsorption Enthalpy Enabled by Uncoordinated N-Heteroatom Sites of a 3D Metal-Organic Framework

A 3D metal-organic framework (MOF), Mn2L2(H2O)2 · (DMF) {H2L = 5- (Pyridin-2-yl)-3, 3′-bi (1H-1,2,4-triazole)} (1) with uncoordinated N-heteroatom sites, has been obtained through hydrothermal method and structurally characterized by X-ray structural analysis, powder X-ray diffraction (PXRD), and thermal analysis (TGA). The framework of compound 1 exhibits fascinating adsorption properties and shows high adsorption enthalpy of CO2. The experimental results prove which uncoordinated nitrogen heteroatom sites can markedly increase the reciprocity between host frame and CO2 at room temperature.

Download Full-text

A new anionic metal–organic framework showing tunable emission by lanthanide(III) doping and highly selective CO2 adsorption properties

RSC Advances ◽

10.1039/c5ra02935j ◽

2015 ◽

Vol 5 (31) ◽

pp. 24655-24660 ◽

Cited By ~ 6

Author(s):

Rong-Ying Chen ◽

Dan Tian ◽

Yun-Wu Li ◽

Ying-Bin Lv ◽

Hong-Wei Sun ◽

...

Keyword(s):

Co2 Adsorption ◽

Metal Organic Framework ◽

Adsorption Properties ◽

High Adsorption ◽

Adsorption Selectivity ◽

Metal Organic ◽

Tunable Emission ◽

Organic Framework

A 3D porous anionic MOF (1), decorated with -NH2 and N sites, can serve as a host for the encapsulation of lanthanide(iii) cations for emission tuning. Besides, it also shows high adsorption selectivity for CO2 over CH4 and N2 at 273 K.

Download Full-text

Imidazole-containing Cd Metal-Organic Framework with Selective Adsorption Properties

E3S Web of Conferences ◽

10.1051/e3sconf/201911801044 ◽

2019 ◽

Vol 118 ◽

pp. 01044

Author(s):

Yu-Ling Li ◽

Zin Zheng ◽

Hui Nie ◽

Chun-Mei Zhao ◽

Yu-Fei Wang ◽

...

Keyword(s):

Hydrogen Bonds ◽

Selective Adsorption ◽

Metal Organic Framework ◽

Chain Structure ◽

Adsorption Properties ◽

X Ray Diffraction ◽

X Ray ◽

1D Chain ◽

Metal Organic ◽

Organic Framework

Metal-organic framework material [Cd(tib)(dnbpdc) (H2O)]·2DMF·2H2O (1) [tib = 1, 3, 5-tris(1-imidazolyl)benzene, H2dnbpdc = 2, 2′-dinitro-4, 4′-biphenyldicarboxylic acid] was synthesized and characterized by Thermogravimetric analyses (TGA), Powder X-ray diffraction (PXRD) analyses and Bruker D8 Advance X-ray diffractometer. The results showed that 1 was a 1D chain structure to be joined together by hydrogen bonds to generate a 3D supramolecular structure. CO2 and N2 adsorption behavior of the material was studied. It is significative that 1 can selective sorption of CO2.

Download Full-text

Crystallographic characterization of the metal–organic framework Fe2(bdp)3 upon reductive cation insertion

Chemical Science ◽

10.1039/d0sc03383a ◽

2020 ◽

Vol 11 (34) ◽

pp. 9173-9180 ◽

Cited By ~ 1

Author(s):

Naomi Biggins ◽

Michael E. Ziebel ◽

Miguel I. Gonzalez ◽

Jeffrey R. Long

Keyword(s):

Single Crystal ◽

Gas Adsorption ◽

Metal Organic Framework ◽

Metal Organic Frameworks ◽

Adsorption Properties ◽

X Ray Diffraction ◽

X Ray ◽

Metal Organic ◽

Organic Framework

Single-crystal X-ray diffraction reveals structural influences on gas adsorption properties in anionic metal–organic frameworks.

Download Full-text

Adsorption properties and structure of CO2 adsorbed on open coordination sites of metal–organic framework Ni2(dhtp) from gas adsorption, IR spectroscopy and X-ray diffraction

Chemical Communications ◽

10.1039/b810574j ◽

2008 ◽

pp. 5125 ◽

Cited By ~ 305

Author(s):

Pascal D. C. Dietzel ◽

Rune E. Johnsen ◽

Helmer Fjellvåg ◽

Silvia Bordiga ◽

Elena Groppo ◽

...

Keyword(s):

Ir Spectroscopy ◽

Gas Adsorption ◽

Metal Organic Framework ◽

Adsorption Properties ◽

X Ray Diffraction ◽

X Ray ◽

Coordination Sites ◽

Metal Organic ◽

Organic Framework

Download Full-text

Ionothermal Synthesis and Crystal Structure of a Neutral 2D Metal- Organic Framework Based on Cobalt(II) 1,2,3-Benzenetricarboxylate

Zeitschrift für Naturforschung B ◽

10.5560/znb.2014-4091 ◽

2014 ◽

Vol 69 (8) ◽

pp. 864-870 ◽

Cited By ~ 1

Author(s):

Shun Shun Liu ◽

Rui Min Zhou ◽

Shuai Chen ◽

Yan Bai ◽

Dong Bin Dang

Keyword(s):

Room Temperature ◽

Metal Organic Framework ◽

X Ray Diffraction ◽

Synthesis And Crystal Structure ◽

X Ray ◽

Distorted Trigonal Bipyramid ◽

Metal Organic ◽

Benzenetricarboxylic Acid ◽

Neutral Metal ◽

Organic Framework

A neutral metal-organic framework [CoNa3(1,2,3-Hbtb)(1,2,3-btb)] (1) has been synthesized through an ionothermal method using 1-ethyl-3-methylimidazolium bromide as solvent (1,2,3- H3btb=1,2,3-benzenetricarboxylic acid). The complex has been characterized by IR spectroscopy, elemental analysis, PXRD and single-crystal X-ray diffraction. The structure of 1 exhibits a layer network structure in which Co(II) is five-coordinated forming a distorted trigonal bipyramid. Na1 and Na3 are surrounded by seven oxygen atoms, and Na2 is six-coordinated. In the structure, the anions of 1,2,3-H3btb are embedded in two bridging μ8 coordination modes. The luminescence properties of 1 have been investigated in the solid state at room temperature.

Download Full-text

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)

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc20080024 ◽

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.

Download Full-text