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A series of metal-organic frameworks constructed by a rigid-flexible 5-(bis(4-carboxybenzyl)amino)isophthalic acid: syntheses, crystal structures and physical properties

Abstract

Four new metal-organic frameworks (MOFs), namely, [Zn2L]n (1), [Mn(H2L)(H2O)]n (2), [Cd(H2L)(H2O)2]n•nH2O (3) and [Pb2L(H2O)]n•3nH2O•nDMF (4), have been prepared by using a tetracarboxylic acid ligand H4L (H4L = 5-(bis(4-carboxybenzyl)amino)isophthalic acid) under hydrothermal conditions and structurally characterized by elemental analysis, IR spectroscopy, single-crystal X-ray diffraction analysis and powder X-ray diffraction. Structural analyses revealed that 1, 2 and 4 exhibit three-dimensional network structures. The structure of 1 can be symbolized as a 2-nodal 6-connected net with (411•64)(47•68) topology. The framework of 2 can be considered as a 4-connected net with (62•84)(63•83) topology. The structure of 4 can be regarded as a 5-connected net with a 43•66•8 topology. In contrast, 3 exhibits 2D structure with 3,3-connencted (63)2 topology. These MOFs exhibit excellent photocatalytic activities for dye degradation under visible light irradiation. Furthermore, 2 displays weak antiferromagnetic interaction at low temperature.

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Publication details

The article was received on 21 Jul 2018, accepted on 23 Oct 2018 and first published on 31 Oct 2018


Article type: Paper
DOI: 10.1039/C8CE01209A
Citation: CrystEngComm, 2018, Accepted Manuscript
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    A series of metal-organic frameworks constructed by a rigid-flexible 5-(bis(4-carboxybenzyl)amino)isophthalic acid: syntheses, crystal structures and physical properties

    Y. Qiao, Y. Ma, W. Jiang, X. Wang, W. Guan, G. Che, W. Li and F. Qin, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE01209A

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