Synthesis, Structure And Characterization Of Metal-Organic Hybrid Materials

Metal-organic hybrid material can be formed through the metal ion or metal clusters as nodes, and one or two organic ligands with bidentate or more dentate as support, leading to porous or interpentrated structure. The choice of metal atoms may be the transition elements with a variety of tunable valence and more coordination mode or the rare earth elements with a higher coordination number. Ligand may be chosen as the rigid-, flexible-, rigid-flexible-or lower symmetric ligand. In addition, appropriate N-donor complexes often bring new properties on the structure of MOFs materials, such as the structure directing agent or template agent.The solution method and the hydrothermal method can accomplish the metal-organic hybrid materials. In this work, the corresponding synthetic route and reaction conditions, such as the reaction molar ratio, pH, and the reaction temperature are studied. So, four novel metal-organic hybrid materials are obtained.1.[Cu(py)2(o-HBA)2]n belongs to triclinic system with space group P-1: a=0.73720(15) nm, b=1.0846(2) nm, c=1.4740(3) nm,α=108.51(3)°, (3=93.90(3)°,γ=103.72(3)°, V=1.0725(4) nm3, Z=1, Dc=1.520 g/cm3,μ=1.063 mm-1, R1=0.0363. Each Cu atom is distorted square pyramidal configuration.The 1D chain is formed by linking Cu (Ⅱ) ions with o-HBA. The van der walls forces hold the chains to the 3D supermolecular network.2.[Zn(Im)2(4-CPOA)]n belongs to monoclinic system with space group C2/c: a=2.0408(4) nm, b=2.5032(5) nm, c=0.82606(17) nm,β=104.68(3)°, V=4.0822(14) nm3, Z=8, Dc=1.551 g/cm3,μ=1.261 mm'1, R1=0.0517. Each Zn atom is distorted tetrahedral configurations. The 1D chain is formed by linking two Zn (Ⅱ) ions with 4-CPOA. The H-bonds hold the chains to the 3D supermolecular network.3.[Gd2(H20)2(C10H806)3·2H20]n belongs to monoclinic system with space group P21/c:a=1.2123(2) nm, b=1.6700(3) nm, c=0.89385(18) nm,0=109.25(3)°, V=1.7084(6) nm3, Z=4, Dc= 2.059 g/cm3,μ=3.943 mm-1, R1=0.0244. Each Gd atom is distorted prism configuration. Adjacent GdO9 Polyhedron formed edged dimer. The edge connected dimer form a layered structure.4.{[Eu(phen)]2(cpoa)3}·0.5H2O, belongs to triclinic system with space group P-1, a=0.85148(17) nm, b= 1.0744(2) nm, c=1.3311(3). nm, a=96.27(3)°,β=104.93(3)°, y=98.50(3)°, V=1.1499(4) nm3, Z=1, Dc=1.809 g/cm3,μ=2,782 mm-1, R1=0.0197. Asymmetric unit consists of two Eu, three cpoa and half water molecules, the edge-sharing dimer is formed of two crystallographically independent Eu connect by four cpoa (two typeⅠand two typeⅡ). The edge connected dimer form a layered structure.