A 2D + 2D → 3D inclined polycatenated dynamic metal-organic framework of {[Cu(4-bpe)(2-ntp)(HO)]·2HO} [1, where 2-ntp = 2-nitroterephthalate and 4-bpe = 1,2-bis-(4-pyridyl)ethane] has been synthesized and characterized. The variable-temperature powder X-ray diffraction study indicates the dynamic nature of the inclined polycatenated framework, and the dehydrated framework with exposed metal centers exhibits excellent type I H adsorption of 1.94 wt % at 77 K and 1 bar of pressure.
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http://dx.doi.org/10.1021/acs.inorgchem.6b02719 | DOI Listing |
Inorg Chem
April 2024
Department of Chemistry, Jadavpur University, Jadavpur, Kolkata 700032, India.
Detection and sensing of amines through enhanced fluorescence emission are always challenging in aqueous solution. The range of different Lewis basicities, shapes, and sizes as well as the different structural arrangements of amines is responsible for their less specificity in aqueous solution. Here, we have designed a highly fluorescent emissive 2D + 2D → 3D inclined polycatenated NO-functionalized flexible metal-organic framework (MOF) for selective segregation of electron-rich aromatic primary amines from electron-deficient amines in aqueous solution, showing different emission behaviors.
View Article and Find Full Text PDFInorg Chem
August 2023
Department of Chemistry, Jadavpur University, Jadavpur, Kolkata 700 032, India.
Coordination polymers with external stimuli-responsive structural transformation acquired paramount importance in the advanced material research field due to their eye-catching application to deal with the existing challenging issue, and Co(II) metal complex with d electronic configuration is a renowned candidate for kinetic accountability and has the potentiality of structural transformation. Bearing these factors in mind, here, a Co(II) congener of a previously reported high hydrogen-adsorbing Cu(II)-based coordination polymer (CP), {[Cu(4-bpe)(2-ntp)]} [where 2-ntp = 2-nitroterephthalate and 4-bpe = 1,2-bis-(4-pyridyl)ethane], has been synthesized to study the metal change impact on hydrogen adsorption and solvent-induced structural transformation with their impact on hydrogen uptake. This modified framework has a 2D + 2D → 3D inclined polycatenated framework as comparable to our previously published Cu(II) framework.
View Article and Find Full Text PDFChemistry
April 2022
Institute of Inorganic and Analytical Chemistry, Justus-Liebig University Giessen, Heinrich-Buff-Ring 17, 35390, Giessen, Germany.
Eight cationic, two-dimensional metal-organic frameworks (MOFs) were synthesized in reactions of the group 13 metal halides AlBr , AlI , GaBr , InBr and InI with the dipyridyl ligands 1,2-di(4-pyridyl)ethylene (bpe), 1,2-di(4-pyridyl)ethane (bpa) and 4,4'-bipyridine (bipy). Seven of them follow the general formula [MX (L) ]A, M=Al, In, X=Br, I, A =[MX ] , I , I , L=bipy, bpa, bpe. Thereby, the porosity of the cationic frameworks can be utilized to take up the heavy molecule iodine in gas-phase chemisorption vital for the capture of iodine radioisotopes.
View Article and Find Full Text PDFInorg Chem
February 2022
Université de Strasbourg, ISIS, 8 allée Gaspard Monge, 67083 Strasbourg, France.
Adipic (hexane-1,6-dicarboxylic, adpH) and ,-muconic (,-hexa-2,4-diene-1,6-dicarboxylic, mucH) acids have been reacted with uranyl cations under solvo-hydrothermal conditions, yielding nine homo- or heterometallic complexes displaying in their crystal structure the effects of the different flexibility of the ligands. The complexes [PPh][(UO)(adp)] () and [Ni(bipy)][(UO)(muc)]·5HO (), where bipy is 2,2'-bipyridine, crystallize as diperiodic networks with the topology, the layers being strongly puckered or quasiplanar, respectively. Whereas [(UO)(adp)Ni(cyclam)]·2HO (), where cyclam is 1,4,8,11-tetraazacyclotetradecane, crystallizes as a diperiodic network, [(UO)(muc)Ni(cyclam)]·2HO () is a triperiodic framework in which the Ni cations are introduced as pillars within a uranyl-muc framework with the topology.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
November 2019
State Key Laboratory of Radiation Medicine and Protection, School for Radiological and interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China.
The design and synthesis of uranium sorbent materials with high uptake efficiency, capacity and selectivity, as well as excellent hydrolytic stability and radiation resistance remains a challenge. Herein, a polyoxometalate (POM)-organic framework material (SCU-19) with a rare inclined polycatenation structure was designed, synthesized through a solvothermal method, and tested for uranium separation. Under dark conditions, SCU-19 can efficiently capture uranium through ligand complexation using its exposed oxo atoms and partial chemical reduction from U to U by the low-valent Mo atoms in the POM.
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