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Issue 10, 2018
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Metal–organic frameworks based on octafluorobiphenyl-4,4′-dicarboxylate: synthesis, crystal structure, and surface functionality

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Abstract

In contrast to aromatic carboxylates, the coordination polymers based on their perfluorinated analogues are not numerous. Here we present a series of six Zn(II) coordination polymers of different dimensionalities (1D, 2D, and 3D) and porosities based on octafluorobiphenyl-4,4′-dicarboxylate (oFBPDC2−) and N-containing co-ligands (ur, dabco, and bpy). These complexes are characterized by single-crystal X-ray diffraction, PXRD, FT-IR, elemental analysis, and TGA. The metal–organic frameworks [Zn2(CH3CONH2)2(oFBPDC)2] (1) and [Zn2(oFBPDC)2(dabco)] (4) are shown to be porous with BET surface areas of 470 m2 g−1 and 441 m2 g−1, respectively. In addition, compound 4 shows selectivity factors of 11.3, 4.9 and more than 6 for the binary gas mixtures CO2/N2, CO2/CH4 and benzene/cyclohexane, respectively. The measurements for pressed powders and water droplet give water contact angles of 136° for 4 and 133° for (H2bpy)[Zn2(bpy)(oFBPDC)3] (5). Low water uptake indicates that both 4 and 5 belong to highly hydrophobic solids.

Graphical abstract: Metal–organic frameworks based on octafluorobiphenyl-4,4′-dicarboxylate: synthesis, crystal structure, and surface functionality

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Publication details

The article was received on 04 Dec 2017, accepted on 13 Jan 2018 and first published on 15 Jan 2018


Article type: Paper
DOI: 10.1039/C7DT04566B
Citation: Dalton Trans., 2018,47, 3283-3297
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    Metal–organic frameworks based on octafluorobiphenyl-4,4′-dicarboxylate: synthesis, crystal structure, and surface functionality

    A. M. Cheplakova, K. A. Kovalenko, D. G. Samsonenko, V. A. Lazarenko, V. N. Khrustalev, A. S. Vinogradov, V. M. Karpov, V. E. Platonov and V. P. Fedin, Dalton Trans., 2018, 47, 3283
    DOI: 10.1039/C7DT04566B

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