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Citation: Qin-He Pan, Rui-Jing Tian, Sui-Jun Liu, Qi-Hui Wu, Yuan-Yuan Zhu, Qiang Chen, Xiao-Yan Ren, Tong-Liang Hu. [Co(NH3)6]2[Cd8(C2O4)11(H2O)4]·8H2O：A 5-connected sqp topological metal-organic framework co-templated by Co(NH3)63+ cation and (H2O)4 cluster[J]. Chinese Chemical Letters, ;2013, 24(10): 861-865. shu

[Co(NH3)6]2[Cd8(C2O4)11(H2O)4]·8H2O：A 5-connected sqp topological metal-organic framework co-templated by Co(NH3)63+ cation and (H2O)4 cluster

  • 1.

    a Ministry of Education Key Laboratory of Advanced Materials of Tropical Island Resources, Department of Materials and Chemical Engineering, Hainan University, Haikou 570228, China;

  • 2.

    b Department of Chemistry, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE), Nankai University, Tianjin 300071, China;

  • 3.

    c State Key of Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China

  • Corresponding author: Qin-He Pan,  Tong-Liang Hu, 
  • Received Date: 9 April 2013
    Available Online: 4 June 2013

    Fund Project: This work was supported by the National Natural Science Foundation of China (No. 21101047) (No. 21101047) the Program for New Century Excellent Talents in University (No. NCET-11-0929) (No. NCET-11-0929) the Natural Science Foundation of Hainan Province (No. 211010) (No. 211010) the Priming Scientific Research Foundation of Hainan University (No. kyqd1051). (No. kyqd1051)

  • In our efforts to construct new metal-organic frameworks (MOFs) by template-directing method, a new cadmium oxalate, [Co(NH3)6]2[Cd8(C2O4)11(H2O)4]·8H2O (denoted HNU-1), has been synthesized under hydrothermal condition in the presence of Co(NH3)6Cl3. The crystal structure of HNU-1 was determined by single-crystal X-ray diffraction (monoclinic, C2/c), a = 11.126(2)Å, b = 17.361(4)Å, c = 16.119(3)Å, β = 102.40(3)°, V = 3040.8(10)Å3 and Z = 8. The open framework of HNU-1 contains 12-ring channels and exhibits a 5-connected sqp topological network with dinuclear Cd(Ⅱ) clusters acting as nodes. The Co(NH3)63+ cations and unusual hydrogen-bonded (H2O)4 clusters are found in the 12-ring channels with an alternative arrangement. It is believed that the (H2O)4 clusters play a co-templating role in the crystallization of HNU-1.
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