Organic - Inorganic Hybrid Functional Materials: Synthesis Of Functional Complexes Of Aromatic Carboxylic Acid Metal, Crystal Structure, And Performance Research

In this manuscript, we use poly-pyridyl 4,4'-bipyridine, 2,2'-bipyridine and 2- pyridine carboxylic acid and carboxylate ligands to synthesized nine new complexes by different synthetic methods, they are polynuclear metal complexes , coordination polymers and supramolecular complexes, respectively. They are 1.[Cu(o-phth)(H₂O)]_n 2.[CuK₂ (3-nitro-phth) 2 (H₂0) ₄] 3. [Co(3-nitro-phth)(4,4'-bipy)₂(H₂0)3]_n 4. [Co₃(C₉H₃O₆)₂(py)₉(H₂O)₃]₅. [Mn₃(C₉H₃O₆)₃(H₂O)₁₂] 6. [Cu(C₆H₄NO₂)₂(H₂O)]_n7. [Ni(C₆H₄O₂)₂(H₂O)₄]_n 8.[Cu(pyr)₂]9. [Cu(Cu(C₁₀N₂H₈)_1.5 (C₉NO₄H₃) 3(H₂O)₆].A new 3D network Co₃(PO₄)₂-6H₂O is also synthesized by hydrothermal reaction. The Crystal structures of these complexes have been determined by x-ray diffraction.Complexes 1-5 are all aromatic carboxylic acid compounds. Complex 1 is Monoclinic system with space group P-1, it is 2-D network structure made of o-phthalate coordinated to two Cu( II), strong π - π interaction stabilize the crystal structure; Complex 2 is Triclinic system with space group P-l, the crystal structure consists of a centrosymmetric polyuclear [K₄Cu₂(NPA)₄(H₂O)₈] structural unit, K(1) is KO₆ coordination form and K(2) is KO₅ coordination mode, four potassium atoms (K1C, K2AE, K1AE and K2C) and two copper atoms (Cu1E and Cu1J) from adjacent structural units build a 6-center metallocycle through bridging carboxylate-oxygen atoms; Complex 3 is Triclinic system with space group P-l, The cobalt ion has a coordination geometry approximated to octahedral, which constitutes of one 4,4'-bipyridyl, one 3-nitro-phthalic acid and two water molecular; Complex 4 builds up by one Co( II) ion with three pydines,. two benzene-l,3,5-tricarboxylic acid and one water molecular, benzene-l,3,5-tricarboxylic acid supply carboxylate-oxygen coordinated to Co and made a 3D network; Complex 5 is a ID chain formed of Mn ion and benzene-l,3,5-tricarboxylic acid.Complexes 6-9 are all aromatic carboxylic acid compounds. Complex 6 is Triclinic system with space group P-l, 2-picolinic acid coordinates to Cu(II) as a bidentate ligand and forms 1-D chain; Complex 7 is Monoclinic system with space group P21n, it is 2-D network structure made of one Ni (II) bonds to two 2-picolinic acid, two coordinated water molecular and two crystal lattice water; Complex 8 is Triclinic system with space group P-l, it is a plane geometry made of Cu bonds to pyrazine-2-carboxylic acid; Complex 9 is Triclinic system with spacegroup P-l, the compound is formed by three Cu (2,6-pyridinedicarboxylic) (4, 4'—dipyridyl) 0.5 (H2O) 2 units.The transition metal phosphate is a important segment of hollow framework phosphate system. A new three dimensional layered cobalt phosphate complex Co3 (PO 4) 2*6H2O, was prepared by hydrothermal reaction of Co (CH3COO) 2-4 H2O and H3PO 3, NH4VO3. The crystal structure of the complex was determined by single-crystal X-ray diffraction. The result indicate that it crystallizes in the tetragonal space group I-4m. The title complex is also characterized by IR and TG-DTA.In this paper, the IR studies of complexes 1-10 are consistent with their crystal structures. Moreover, thermal properties of complexes and electrochemical, magnetic properties have been also studied.