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Issue 12, 2010
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Four novel topological frameworks based on 4,4′-(hexafluoroisopropylidene)diphthalic acid and 1,1′-(1,4-butanediyl)bis(imidazole) ligand

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Abstract

Four new coordination polymers, constructed from 4,4′-(hexafluoroisopropylidene)diphthalic acid (H4L) and 1,1′-(1,4-butanediyl)bis(imidazole) (biim-4) ligand, have been synthesized: [Cd(HL)(Hbiim-4)(biim-4)0.5(H2O)]·2H2O (1), [Cd2(L)(biim-4)0.5(H2O)2]·0.5H2O (2), [Mn2(L)(biim-4)0.5(H2O)2]·0.5H2O (3), and [Zn2(L)(biim-4)1.5]·(CH3CH2OH) (4), where H4L = 4,4′-(hexafluoroisopropylidene)diphthalic acid, and biim-4 = 1,1′-(1,4-butanediyl)bis(imidazole). Compound 1 displays a 1D chain structure, which is extended by intermolecular hydrogen-bonding interactions to give a novel trinodal (4,5)-connected (4·64·8)(42·63·8)(43·64·83) topology. Compounds 2 and 3 are nearly isostructural with the same uncommon (5,6)-connected frameworks. Compound 4 shows an unprecedented self-penetrating (4,5)-connected net with Schläfli symbol of (42·6·72·8)(62·72·82)(42·63·73·82). The structural and topological differences of these four compounds indicate that the pH values and the central metals have significant effects on producing novel structures and topologies of the coordination complexes. The thermogravimetric and photoluminescent properties were also investigated for the compounds.

Graphical abstract: Four novel topological frameworks based on 4,4′-(hexafluoroisopropylidene)diphthalic acid and 1,1′-(1,4-butanediyl)bis(imidazole) ligand

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Publication details

The article was received on 07 May 2010, accepted on 21 Jun 2010 and first published on 25 Aug 2010


Article type: Paper
DOI: 10.1039/C0CE00181C
Citation: CrystEngComm, 2010,12, 4433-4442
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    Four novel topological frameworks based on 4,4′-(hexafluoroisopropylidene)diphthalic acid and 1,1′-(1,4-butanediyl)bis(imidazole) ligand

    L. Zhang, J. Ma, Y. Pang, J. Ma and J. Yang, CrystEngComm, 2010, 12, 4433
    DOI: 10.1039/C0CE00181C

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