Preparation And Properties Of MOFs Based On Bimetallic Carbene And Chiral Organometallic Materials C-OMF

Metal organic frameworks(MOFs)are porous crystalline materials composed of metal ions or metal clusters and multidentate organic ligands.Compared with traditional inorganic porous materials,MOFs have many advantages including high porosities,high specific surface area,tunable pore sizes and topologies,uniform dispersion of components.Organometallic framework materials(OMFs)refer to porous framework materials assembled based on metal-carbon bonds.Although both are driven by metal-ligand interactions,unlike traditional metal-heteroatom driven MOFs,organometallic frameworks(OMFs)are bonded by metal-carbon bonds and are prepared from repeated units in the same way as COFs.?.Under solvothermal conditions,we combined the pre-synthesized gold and palladium N-heterocyclic biscarbene dicarboxylic acid ligands Au-NHBC-H₂L and Pd-NHBC-H₂L with biphenyl-4,4'-dicarboxylic acid(BPDCA)and Zr Cl₄is mixed and prepared.In the UiO-67-Au/Pd-NHBC MOF obtained,Au-NHBC and Pd-NHBC organometallic catalytic species have a synergistic effect,which can better promote the hydration of alkyne-Suzuki continuous coupling reaction.In addition,this dual catalyst is stable and can be reused at least six times under given conditions without losing catalytic activity.?.A case of chiral organometallic material C-OMF was synthesized,and the compound was characterized by PXRD?IR?SEM?TEM?NMR and other means.The organometallic material is expected to be used in cooperative catalysis,tandem reactions,photocatalysis and asymmetric catalysis.In this paper,the bimetallic carbene-based MOFs and chiral organometallic framework C-OMF materials prepared by a series of methods have good catalytic activity and stability,and provide new ideas for catalyst synthesis.