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Issue 5, 2013
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Four 3D “brick-wall”-like metal–organic frameworks with a flexible ligand of (S,S,R,R)-1,2,3,4-cyclopentanetetracarboxylic acid: crystal structures, luminescent and magnetic properties

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Abstract

To investigate the conformation of cyclopentanetetracarboxylic acid, four new “brick-wall”-like metal–organic frameworks have been synthesized from hydrothermal reactions with different metal salts, (S,S,R,R)-1,2,3,4-cyclopentanetetracarboxylic acid (H4cptc) and auxiliary N-donor ligands, namely, Cu2(S,S,R,R-cptc)(bpe)(H2O)2·2H2O (1), Co2(S,S,R,R-cptc)(bpe)0.5(H2O)2·2H2O (2), Cd4(S,S,R,R-cptc)2(bpa)2(H2O)5·2H2O (3) and Co2(S,S,R,R-cptc)(bpy)0.5(H2O)2·2(H2O) (4) (bpe = 4-(2-(pyridine-4-yl)vinyl)pyridine, bpa = 4-(2-(pyridine-4-yl)ethyl)pyridine, bpy = 4-(pyridine-4-yl)pyridine). The complexes were further characterized by single-crystal X-ray diffraction, power X-ray diffraction, FT-IR spectra, fluorescent measurements and variable-temperature magnetic susceptibility measurements. The results of the structural investigations show that 1 is a charming (3,3,4)-trinodal architecture, 3 is an interesting trinodal (3,4,5)-connected architecture, and 2 and 4 are isostructural, which are both (4,5)-connected networks. In addition, the magnetic measurements indicate that 2 and 4 show weak antiferromagnetic interactions, and the fluorescent measurement shows the strong solid-state fluorescent emission at room temperature for 3.

Graphical abstract: Four 3D “brick-wall”-like metal–organic frameworks with a flexible ligand of (S,S,R,R)-1,2,3,4-cyclopentanetetracarboxylic acid: crystal structures, luminescent and magnetic properties

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Publication details

The article was received on 03 Sep 2012, accepted on 04 Oct 2012 and first published on 09 Oct 2012


Article type: Paper
DOI: 10.1039/C2DT32022C
Citation: Dalton Trans., 2013,42, 1637-1644
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    Four 3D “brick-wall”-like metal–organic frameworks with a flexible ligand of (S,S,R,R)-1,2,3,4-cyclopentanetetracarboxylic acid: crystal structures, luminescent and magnetic properties

    L. Cui, X. Luan, C. Zhang, Y. Kang, W. Zhang, Y. Wang and Q. Shi, Dalton Trans., 2013, 42, 1637
    DOI: 10.1039/C2DT32022C

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