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A new 3D metal-organic framework of {[Co3(IDC)2(bipy)2(py)2]·7H2O}n (1) was obtained by the hydrothermal reaction of Co(NO3)2·6H2O, imidazole-4,5-dicarboxylic acid (H3IDC), 4,4’-bipyridine (bipy), and pyridine (py), and structurally characterized by elemental analysis, infrared spectroscopy, thermal gravimetric analysis, and single-crystal X-ray diffraction. X-ray diffraction crystal structural analysis reveals that it crystallizes in orthorhombic system, space group Pccn with a = 11.1040(3), b = 19.8834(5), c = 21.3025(5), V = 4703.3(2)3, Mr = 1079.63, Z = 4, Dc = 1.525 Mg·m-3, F(000) = 2212, μ(CuKα) = 8.855 mm-1, the final R = 0.0331 and wR = 0.0713 for 2525 observed reflections with I ≥ 2σ(I). In compound 1, each cobalt(II) ion is six-coordinated with a slightly distorted octahedral coordination geometry, and each μ3-IDC3- acts as a bridge to bond three neighboring Co(II) ions, leading to an infinite 2D network layer structure of [Co3(IDC)2]n with Kagomé lattice. The adjacent layers are further linked by μ2-bipy to form an infinite 3D layered-pillared framework architecture of [Co3(IDC)2(bipy)2(py)2]n.
A new 3D metal-organic framework of {[Co3 (IDC) 2 (bipy) 2 (py) 2] · 7H2O} n (1) was obtained by the hydrothermal reaction of Co (NO3) 2 · 6H2O, 5-dicarboxylic acid (H3IDC), 4,4’-bipyridine (bipy), and pyridine (py), and structurally characterized by elemental analysis, infrared spectroscopy, thermal gravimetric analysis, and single-crystal X-ray diffraction. diffraction crystal structural analysis reveals that it crystallizes in orthorhombic system, space group Pccn with a = 11.1040 (3), b = 19.8834 (5), c = 21.3025 (5) , V = 4703.3 (2) 3, Mr = 1079.63 , The final R = 0.0331 and the wR = 0.0713 for 2525 observed reflections with I ≥ 2σ (I), Z = 4, Dc = 1.525 Mg · m -3, F (000) = 2212, μ (CuKα) = 8.855 mm -1 ). Each of the cobalt (II) ions is six-coordinated with a slightly distorted octahedral coordination geometry, and each μ3-IDC3- acts as a bridge to bond three neighboring Co (II) ions, leading to an infinite 2D network layer structure of [Co3 (IDC) 2] n with Kagomé lattice adjacent layers are further linked by μ2-bipy to form an infinite 3D layered-pillared framework architecture of [Co3 (IDC) 2 (bipy) 2 (py) 2] n.