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Issue 7, 2014
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Three coordination polymers constructed from various polynuclear clusters spaced by 2,2′-azodibenzoic acid: syntheses and fluorescent properties

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Abstract

Solvothermal reactions of M(OAc)2·2H2O (M = Zn, Cd, Pb) with 2,2′-azodibenzoic acid (H2L) in MeOH–H2O (MeOH = methanol) at 120 °C gave rise to three coordination polymers, [Zn124-O)3L9]n (1), [CdL(H2O)]n (2) and [Pb34-O)L2]n (3). Compounds 1–3 are characterized by elemental analysis, IR, powder X-ray diffraction and single-crystal X-ray diffraction. Compound 1 has two similar tetranuclear [Zn44-O)(μ2-CO2)6] units as nodes and displays an intriguing three-dimensional (3D) 6-connected network with a 41263 topology. Compound 2 exhibits a 3D framework constructed by linking infinite helical Cd-carboxylate chains through L ligands. Compound 3 holds a 3D structure in which each hexanuclear [Pb64-O)2(CO2)4] unit works as a six-connecting node to connect its equivalent ones via sharing L ligands. In addition, the fluorescent properties and thermal stabilities of 1–3 were also investigated.

Graphical abstract: Three coordination polymers constructed from various polynuclear clusters spaced by 2,2′-azodibenzoic acid: syntheses and fluorescent properties

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Publication details

The article was received on 14 Oct 2013, accepted on 24 Nov 2013 and first published on 28 Nov 2013


Article type: Paper
DOI: 10.1039/C3DT52888J
Citation: Dalton Trans., 2014,43, 2915-2924
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    Three coordination polymers constructed from various polynuclear clusters spaced by 2,2′-azodibenzoic acid: syntheses and fluorescent properties

    L. Liu, C. Yu, J. Sun, P. Meng, F. Ma, J. Du and L. Ma, Dalton Trans., 2014, 43, 2915
    DOI: 10.1039/C3DT52888J

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