Synthesis,Structure And Characterization Of Bismuth And Transition Metal Complexes Of Heterocyclic Carboxylic Acid

With the passage of time,more and more common ligands and metals have been used to synthesize complexes.People’s research of complexes have turned to the complexes with novel structure,thus ligands which had a variety of coordination capabilities and metal complexes with special chemical properties have been widely concerned.Synthesizing new complexes is one of the important means of promoting the research of complexes.Five kinds of metal complexes of heterocyclic and heterocyclic carboxylic acid were synthesized using solvothermal synthesis method,room temperature solid state synthesis method,and solution self-assembly method.The single crystals of the complexes were successfully cultured,and elemental analysis was performed.The structures and compositions of the obtained complexes were characterized by X-ray diffraction analysis,infrared spectroscopy,X-ray single crystal diffraction and thermal analysis.The main work of this paper is as follows:（1）Two bismuth complexes[Bi（3-apac）₂（H₂O）Cl₃]（3-apac）₂ and(C₅H₁₄N₂)₂[Bi₂Cl₁₀]?2H₂O were synthesized with bismuth chloride and3-aminopyrazine-2-carboxylic acid（3-apac）or N-methylpiperazine as raw materials.Both the complexes belong to monoclinic crystal system and space group P2₁/n.（2）The coordination polymer for the single crystal[Ni₂（μ₄-btca）（phen）₂（H₂O）₂]_n was synthesized with 1,2,4,5-pyromellitic acid（H₄btca）,1,10-phenanthroline（phen）and nickel sulfate as raw materials by solvothermal synthesis.The coordination polymer belongs to monoclinic crystal system and space group P2₁/n.Meanwhile,the coordination polymer has certain fluorescence properties.（3）Two complexes[Cu（H₂pda）（pda）]and[Zn（Hpda）₂]?2H₂O were synthesized with pyridine-2,6-dicarboxylic acid（H₂pda）and copper acetate or zinc acetate as raw materials by room temperature solid-solid reaction.Both the complexes belong to monoclinic crystal system and space group P2₁/n.The CuO and ZnO nanoparticles with different particle sizes can be prepared with the powder samples of the complexes as the precursors by calcination at 400?800°C.The particle sizes of nano-CuO and nano-ZnO can be changed by controlling the pyrolysis temperature of the complex precursors,and increase with the increase of pyrolysis temperature.