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Issue 14, 2015
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Exploring 5-fluoronicotinic acid as a versatile building block for the generation of topologically diverse metal–organic and supramolecular Ni, Co, and Cd networks

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Abstract

Five new coordination compounds, namely [Ni(5-Fnic)2(μ2-H2O)0.5]n (1), [Co(5-Fnic)2(H2biim)]n (2), {[Cd(5-Fnic)2(phen)]·2H2O}n (3), [Cd(5-Fnic)2(H2biim)2] (4), and [Co(5-Fnic)2(H2O)4] (5), were generated by hydrothermal methods from the metal(II) nitrates, 5-fluoronicotinic acid (5-FnicH), and an optional ancillary 1,10-phenanthroline (phen) or 2,2′-biimidazole (H2biim) ligand. All the products 1–5 were characterized by IR spectroscopy, elemental, thermogravimetric, and single-crystal X-ray diffraction analyses. Their structures range from the intricate 3D metal–organic framework (MOF) 1 to the 1D coordination polymers 2 and 3, and the discrete 0D monomers 4 and 5. The structures of 2–5 are further extended [1D → 2D (2), 1D → 1D (3), 0D → 1D (4), and 0D → 3D (5)] into various H-bonded networks. The topological analysis of the underlying coordination (in 1) and H-bonded (in 2–5) nets revealed a very rare 3,6T10 MOF topology in 1, a parallel 2D + 2D interpenetration of the sql nets in 2, a topologically unique double chain in 3, a simple 2C1 topology in 4, and a pcu (alpha-Po primitive cubic) topology in 5. The magnetic (for 1 and 2) and luminescent (for 3 and 4) properties were also investigated and discussed.

Graphical abstract: Exploring 5-fluoronicotinic acid as a versatile building block for the generation of topologically diverse metal–organic and supramolecular Ni, Co, and Cd networks

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Publication details

The article was received on 14 Nov 2014, accepted on 05 Jan 2015 and first published on 06 Jan 2015


Article type: Paper
DOI: 10.1039/C4RA14534H
Author version available: Download Author version (PDF)
Citation: RSC Adv., 2015,5, 10400-10411
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    Exploring 5-fluoronicotinic acid as a versatile building block for the generation of topologically diverse metal–organic and supramolecular Ni, Co, and Cd networks

    Y. Cui, J. Wu, A. M. Kirillov, J. Gu and W. Dou, RSC Adv., 2015, 5, 10400
    DOI: 10.1039/C4RA14534H

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