61357-76-4Relevant articles and documents
Selective Gas Uptake and Rotational Dynamics in a (3,24)-Connected Metal-Organic Framework Material
Trenholme, William J. F.,Kolokolov, Daniil I.,Bound, Michelle,Argent, Stephen P.,Gould, Jamie A.,Li, Jiangnan,Barnett, Sarah A.,Blake, Alexander J.,Stepanov, Alexander G.,Besley, Elena,Easun, Timothy L.,Yang, Sihai,Schr?der, Martin
, p. 3348 - 3358 (2021)
The desolvated (3,24)-connected metal-organic framework (MOF) material, MFM-160a, [Cu3(L)(H2O)3] [H6L = 1,3,5-triazine-2,4,6-tris(aminophenyl-4-isophthalic acid)], exhibits excellent high-pressure uptake of CO2 (110 wt% at 20 bar, 298 K) and highly selective separation of C2 hydrocarbons from CH4 at 1 bar pressure. Henry's law selectivities of 79:1 for C2H2:CH4 and 70:1 for C2H4:CH4 at 298 K are observed, consistent with ideal adsorption solution theory (IAST) predictions. Significantly, MFM-160a shows a selectivity of 16:1 for C2H2:CO2. Solid-state 2H NMR spectroscopic studies on partially deuterated MFM-160-d12 confirm an ultra-low barrier (~2 kJ mol-1) to rotation of the phenyl group in the activated MOF and a rotation rate 5 orders of magnitude slower than usually observed for solid-state materials (1.4 × 106 Hz cf. 1011-1013 Hz). Upon introduction of CO2 or C2H2 into desolvated MFM-160a, this rate of rotation was found to increase with increasing gas pressure, a phenomenon attributed to the weakening of an intramolecular hydrogen bond in the triazine-containing linker upon gas binding. DFT calculations of binding energies and interactions of CO2 and C2H2 around the triazine core are entirely consistent with the 2H NMR spectroscopic observations.
Hydrogen-deuterium exchange reactions of aromatic compounds and heterocycles by NaBD4-activated rhodium, platinum and palladium catalysts
Derdau, Volker,Atzrodt, Jens,Zimmermann, Jochen,Kroll, Carsten,Brueckner, Francois
experimental part, p. 10397 - 10404 (2010/04/29)
Conventional thermal and microwave conditions were compared for hydrogen-deuterium (H/D) exchange reactions of aminobenzoic acids catalysed by NaBD4-activated Pd/C or RhCl3 with D2O as the deuterium source. We also investi