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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), b = 17.361(4), c = 16.119(3),b = 102.40(3)8, V = 3040.8(10) 3and 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)4clusters are found in the 12-ring channels with an alternative arrangement. It is believed that the(H2O)4clusters play a co-templating role in the crystallization of HNU-1.
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 , has been synthesized under a 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) b = 17.361 (4) , c = 16.119 (3) , b = 102.40 (3) 8, V = 3040.8 (10) and 3and Z = 8. The open framework of HNU-1 contains 12-ring channels and exhibits The Co (NH3) 63 + cations and unusual hydrogen-bonded (H2O) 4clusters are found in the 12-ring channels with an alternative arrangement. It is a 5-connected sqp topological network with dinuclear Cd (II) believed that the (H2O) 4clusters play a co-templating role in the crystallization of HNU-1.