Cyclopentaneteracarboxylic Metal-Organic Frameworks: Tuning the Distance between Layers and Pore Structures with N-Ligands.
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.
School 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.
Qingxiang
Q
Yang
School 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.
ShuangShuang
S
Ren
School 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.
Ying
Y
Hao
School 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.
Qianqian
Q
Zhao
School 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.
Zhijun
Z
Chen
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing 210093, P. R. China.
Hegen
H
Zheng