【摘 要】
：
A novel cobalt(II) coordination polymer, [Co(BTEC)_(1/2)]_n 1, has been synthesized with Co(NO_3)_2·6H_2O and 1,2,4,5-benzenetetracarboxylic acid (H4BTEC) by t
【机 构】
：
Anhui Key Laboratory of Functional Coordination Compounds
论文部分内容阅读
A novel cobalt(II) coordination polymer, [Co(BTEC)_(1/2)]_n 1, has been synthesized with Co(NO_3)_2·6H_2O and 1,2,4,5-benzenetetracarboxylic acid (H4BTEC) by the hydrothermal method, and characterized by elemental analysis, IR and single-crystal X-ray diffraction. Crystallographic data for 1: C_5HO_4Co, M-r = 183.99, monoclinic, space group C2/c, a = 16.619(6), b = 7.416(3), c = 8.040(3) (A), β = 90.612(4)°, V= 990.8(6) (A)~3, Z = 8, D_c = 2.467 g/cm~3, μ = 3.390 mm~(-1), F(000) - 720, R = 0.0307 and wR = 0.0847 for 912 observed reflections (I > 2σ(I)). X-ray crystal structural analysis revealed that each Co(II) adopts a tetrahedral coordination mode to link four separate BTEC ligands via uniform monodentate carboxylate groups and each BTEC ligand possesses an 8-connected geometry to connect eight Co(II) ions. Complex 1 exhibits a rare (4,8)-connected net with (4~5.6)_2(4~(10).6~(14).8~4) topology.
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