Zinc coordination polymers with 2,6-Bis(imidazole-1-yl)pyridine and benzenecarboxylate: Pseudo -supramolecular isomers with and without interpenetration and unprecedented trinodal topology

Jhen Yi Lee, Chih Yuan Chen, Hon Man Lee, Elisa Passaglia, Francesco Vizza, Werner Oberhauser

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The ligand combination of semirigid 2,6-bis(imidazole-1-yl)pyridine (2,6-bip) and rigid benzenecarboxylate allow the isolation of three new zinc coordination polymers. Hydrothermal synthesis between Zn(NO3) 2·6H2O, 2,6-bip, and terephthalic acid under basic condition affords [Zn(1,4-bdc)(2,6-bip)·2H2O]n (1) (1,4-bdc =1,4-benzenedicarboxylate), which shows an undulating 2D (4,4)-network with 2-fold interpenetration. Contrastingly, solvothermal synthesis with identical starting materials in DMF, yields [Zn(1,4-bdc)(2,6-bip)·DMF] n (2), which exhibits noninterpenetrating 2D (4,4)-network. Thus 1 and 2 are pseudo-supramolecular isomeric pair, illustrating the strong effect of guest solvents in controlling the entanglement. A similar hydrothermal reaction to 1 but using 1,3,5-benzenetricarboxylic acid instead yields [Zn 2(μ-OH)(1,3,5-btc)(2,6-bip)·H2O]n (3) (btc = benzenetricarboxylate), which exhibits a (3,4,6)-connected 3D framework with an unprecedented {5.6.7}2{} 2{ 2} topology. Compound 1 and 2 show reversible solvent incorporation properties.(Figure Presented)

Original languageEnglish
Pages (from-to)1230-1237
Number of pages8
JournalCrystal Growth and Design
Issue number4
Publication statusPublished - 2011 Apr 6


All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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