A flexible pro-porous coordination polymer: non-conventional synthesis and separation properties towards CO(2)/CH(4) mixtures

Chemistry : a European Journal
Elisa BareaJorge A R Navarro

Abstract

The novel coordination polymers [Cu(Hoxonic)(H(2)O)](n) (1) and [Cu(Hoxonic)(bpy)(0.5)](n)1.5 n H(2)O (2 subsetH(2)O) (H(3)oxonic: 4,6-dihydroxy-1,3,5-triazine-2-carboxylic acid; bpy: 4,4'-bipyridine) have been isolated and structurally characterised by ab initio X-ray powder diffraction. The dense phase 1 contains 1D zig-zag chains in which Hoxonic dianions bridge square-pyramidal copper(II) ions, apically coordinated by water molecules. On the contrary, 2 subsetH(2)O, prepared by solution and solventless methods, is based on 2D layers of octahedral copper(II) ions bridged by Hoxonic ligands, further pillared by bpy spacers. The resulting pro-porous 3D network possesses small hydrated cavities. The reactivity, thermal, magnetic and adsorptive properties of these materials have been investigated. Notably, the adsorption studies on 2 show that this material possesses unusual adsorption behaviour. Indeed, guest uptake is facilitated by increasing the thermal energy of both the guest and the framework. Thus, neither N(2) at 77 K nor CO(2) at 195 K are incorporated, and CH(4) is only minimally adsorbed at 273 K and high pressures (0.5 mmol g(-1) at 2500 kPa). By contrast, CO(2) is readily incorporated at 273 K (up to 2.5 mmol g(-1)...Continue Reading

References

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Citations

Feb 5, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Soumyabrata GoswamiSanjit Konar
Apr 24, 2012·Chemistry : a European Journal·Raj Kumar DasParimal K Bharadwaj
Sep 20, 2012·Chemical Society Reviews·Trevor A MakalHong-Cai Zhou
Mar 25, 2014·Chemical Society Reviews·Yabing HeBanglin Chen
Nov 16, 2011·Physical Chemistry Chemical Physics : PCCP·Loredana ErraPlacido Neri
Oct 25, 2011·Angewandte Chemie·Youn-Sang Bae, Randall Q Snurr
Dec 30, 2011·Chemical Reviews·Kenji SumidaJeffrey R Long
Oct 8, 2011·Chemical Reviews·Jian-Rong LiHong-Cai Zhou

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