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Isoreticular Metal-Organic Frameworks Pillared by Monovalent Anions
Giulio Bresciani1,2, Virginia Guiotto3, Stefano Canossa4
1Università di Pisa, Dipartimento di Chimica e Chimica Industriale, Via G. Moruzzi 13, I-56124 Pisa, Italy.
Abstract:
Three isoreticular anion pillared metal-organic frameworks were synthesized using CuX2 (X = BF4-, ClO4-, NO3-) salts and the 1,1'-(2-(trifluoromethyl)-1,4-phenylene)bis(1H-imidazole) ligand (bibCF3). Single-crystal X-ray diffraction reveals that these peculiar materials, of the general formula [Cu(bibCF3)2X]·X, feature bidentate monovalent anions acting as pillars between square layers designed by metal ions and organic linkers and extraframework anions located in the channel-like pores. The materials display remarkable thermal and chemical stability and promising CO2 adsorption performance, dependent on the nature of the anion.
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