Synthesis Of Asymmetric Oxadiazole And Triazole Ligands And Study On The Adsorption Properties Of Cu(?)-MOFs

Metal-organic frameworks(MOFs)was a new type of material in recent years,which were prepared from self-assembled of metal central and organic ligands.It has the advantages of porosity,crystalline state,and adjustable structure,etc.However,the poor stability of them was an important obstruction of their further application.In recent years,our group found that stable and porous MOFs can be synthesized from the assembly reaction of the ligands containing Oxadiazole and Triazole rings and metal salts.Therefore,in this paper,a series of asymmetric semi-rigid and rigid organic ligands congtaining Oxadiazole and Triazole rings with multi-coordination sites were designed and prepared.10 stable MOFs with new structures were successfully synthesized through solvent diffusion and hydrothermal methods.,Their structures were characterized by X-ray single crystal diffraction,and their adsorption properties were preliminarily studieded according to their specific structures.1.28 organic ligands with multi-coordination sites containing Oxadiazole or 4-amine-triazole rings were prepared and characterized by H¹NMR and C¹³NMR spectrum,Mass spectrometry,X-ray single crystal diffraction and infrared spectra analysis.2.A simple synthetic route to prepared asymmetric triazole-containing compounds was discovered,and 12 cases of novel asymmetric rigid organic ligands of Oxadiazole or Triazole rings were synthesized according to this route,and they were fully characterized by IR,HNMR,Mass spectrometry and X-ray single crystal diffraction method.3.Ten Cu(I)-MOFs generated from asymmetric Oxadiazole and 4-amine-triazole ligands with multiple coordination sites were synthesized,their structures were determined by single crystal diffraction and the adsorption properties about CO₂,CH₄and N₂of four Cu(I)-MOFs were studied.