Syntheses,Structures And Properties Of Coordination Polymers Based On Triangle N-Containing Ligands

Based on the tri-aniline system,we synthesized triangular nitrogen-containing three imidazole ligands[tris（4-（1H-imidazol）-1-yl）phenyl（amine]）（TIPA）,which has been constructed ten coordination polymers by introducing different auxiliary carboxylic acid ligands successfully.The structure of the complexes were characterized and analyzed by X-ray single crystal diffraction,thermal stability analysis,elemental analysis,X-ray powder diffraction,ultraviolet,infrared and fluorescence.1.Synthesis,structure and fluorescence identification properties of a triangular imidazole ligand coordination polymersUsing triangular nitrogen ligands[tris（4-（1H-imidazol-1-yl）-phenyl）amine]（TIPA）as substrates,The introduction of linear acid with different lengths as auxiliary carboxylic acid ligand:Succinic acid（H₂suc）,Pimelic acid（H₂pim）and azelaic acid（H₂aze）,Three kinds of coordination polymers were synthesized by solvent/hydrothermal:Cd（TIPA）（suc）_0.5（NO₃）·H₂O]_n（1）,[Cd（TIPA）（pim）_0.5（NO₃）·H₂O]_n（2）and[Cd（TIPA）（aze）_0.5Cl·H₂O]_n（3）.1-3 of the complexes were three dimensional structure.The solid fluorescence properties of the three complexes were discussed.In addition,the fluorescence recognition properties of the complexes 1 and3 were also studied.2.Synthesis,structure and adsorption properties of a triangular imidazole ligand coordination polymersUsing the same structure as the triangular nitrogenous main ligand,two different auxiliary ligands:2,5-Thiophenedicarboxylic acid（H₂tda）and azelaic acid（H₂aze）were utilized.Four kinds of coordination polymers were synthesized through solvent/hydrothermal:[Ni（TIPA）（tda）·2H₂O]_n（4）,[Cd（TIPA）（tda）·2H₂O]_n（5）,[Ni（TIPA）（aze）_0.5Cl·H₂O]_n（6）和[Co（TIPA）（aze）_0.5Cl·H₂O]_n（7）,in which the complex 4 was an interpenetrating structure of 2D+2D→3D,and There existed two opposite spiral channels.Compounds of 5-7 were three dimensional reticular structure,in which the complexes 6 and 7 were isomorphic,and the adsorption properties of the complex 4,6 and 7 on the heavy metal oxoanion Pollutants were discussed.3.Synthesis,structure and photodegradation of a triangular imidazole ligand coordination polymersWith TIPA as the main ligand and sebacic acid（H₂seb）as the auxiliary ligand,three kinds of coordination polymers were constructed under the solvent/hydrothermal condition:[Ni（TIPA）（seb）（NO₃）·2H₂O]_n（8）和[Co（TIPA）（seb）（NO₃）·2H₂O]_n（9）和[Zn（TIPA）（seb）·H₂O]_n（10）,the structure of complexes 8and 9 were isomorphic,and the complex 10 was the interpenetrating structure of2D+2D to 3D.The solid fluorescence properties of coordination Compound 10 and solid ultraviolet properties of complexes 8 and 9 were discussed.In addition,the photodegradation properties of the complexes 8 and 9 were also studied.