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Updated: Mar 22, 2026
Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
Cyclopentaneteracarboxylic Metal-Organic Frameworks: Tuning the Distance between Layers and Pore Structures with
Qingxiang Yang1, ShuangShuang Ren1, Ying Hao1
1School of Chemical Engineering and Material Science, Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry , Zhengzhou 450002, P. R. China.
Abstract:
Five new isomorphic coordination polymers of the Co(II) ion, namely, {[Co2L(bpy)0.5(H2O)2]·2H2O}n (1), {[Co2L(pbyb)0.5(H2O)2]·3H2O}n (2), {[Co2L(dpe)0.5(H2O)2]·2H2O}n (3), {[Co2L(dpa)0.5(H2O)2]·2.5H2O}n (4), and {[Co2L(dip)0.5(H2O)2]·3.5H2O}n (5) (H4L = cis,cis,cis,cis-1,2,3,4-cyclopentaneteracarboxylic acid, bpy = 4,4'-bipyridine, pbyb = 1,4-di(pyridine-4-yl)benzene, dpe = 1,2-di(pyridine-4-yl)ethane, dpa = (E)-1,2-di(pyridin-4-yl)diazene, and dip = 1,4-di(1H-imidazol-1-yl)benzene), have been synthesized under hydrothermal conditions. The L(4-) ligand maintains its original conformation of SSRR in all of these compounds, but {Co5L}n clusters show mirror coordination symmetry in 1, 2, and 4 while the clusters in 3 and 5 do not. The addition of different N-ligands can tune the distance between {Co2L}n layers and change the pore structures of the frameworks. Magnetic susceptibility measurements indicate that 1-5 exhibit antiferromagnetic behavior.
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