Hydrothermal Synthesis of a Series of Interpenetrated Metal−Organic Frameworks Based on Long Multicarboxylate and Long Heterocyclic Aromatic Ligands

• Published in: Crystal growth & design 2010-02, Vol.10 (2), p.528-533
• Main Authors: Zhang, Li, Yao, Ya-Li, Che, Yun-Xia, Zheng, Ji-Min
• Format: Article
• Language: English
• Subjects: Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Materials synthesis; materials processing; Other materials; Physics; Specific materials; Thermal expansion; thermomechanical effects and density; Thermal properties of condensed matter; Thermal properties of crystalline solids
• ISSN: 1528-7483; 1528-7505
• DOI: 10.1021/cg9006229

Four entangled polymers, namely, [Ni(bpea)(L1)(H2O)] n (1), [Ni(bpea)(L2)] n (2), {[Ni(bpea)(L3)1.5(H2O)]·(L3)} n (3), and [Co(bpea)(L3)] n (4) (H2bpea = biphenylethene-4′,4-dicarboxylic acid, L1 = 1,3-di(4-pyridyl)propane, L2 = 1,4-bis(imidazol-1-yl-methylene)benzene, L3 = 1,4-bis(1-imidazolyl)benzene) have been synthesized by a hydrothermal reaction. Complex 1 has a 2-fold (4,4)-net parallel interpenetrating structure, while complex 2 shows three-dimensional (3D) structure with 2-fold (4,4)-net inclined polycatenation. Complex 3 displays 3-fold interpenetrated 3D structure, which is the first example of an interpenetrated structure of 4466-sqp topology. Complex 4 is a 3D structure with a 3-fold interpenetrated α-Po topology. Our results imply that the self-assembly of long multicarboxylate and long heterocyclic aromatic ligands with metal ions is a facile assay to produce various interpenetrated metal−organic frameworks. Furthermore, their thermal properties were studied by thermogravimetric analysis. The magnetic property of 4 was measured.