Two novel porous MOFs,[Cu_(2)Cl(TZI)(H_(2)O)_(3)]·4DMA(compound 1)and[Cu_(2)(TZI)(OH)(DMF)]·DMF·H_(2)O(compound 2)(H_(3)TZI=5-(tetrazol-5-yl)isophthalic acid,DMA=N,N-dimethylacetamide,and DMF=N,N-dimeth...Two novel porous MOFs,[Cu_(2)Cl(TZI)(H_(2)O)_(3)]·4DMA(compound 1)and[Cu_(2)(TZI)(OH)(DMF)]·DMF·H_(2)O(compound 2)(H_(3)TZI=5-(tetrazol-5-yl)isophthalic acid,DMA=N,N-dimethylacetamide,and DMF=N,N-dimethylformamide),have been successfully synthesized using the same ligand consisting of isophthalate and tetrazolate groups and CuCl_(2)·2H_(2)O through the secondary building unit(SBU)strategy.Both compounds are constructed from copper cluster-based SBUs.Compound 1 is made up of two different cages based on a Cu paddlewheel and rare-reported double-crown like hexanuclear Cu cluster.In this SBU,the Cu atom adopts a five-coordination in a trigonal bipyramidal configuration,which is very rare in reported MOFs.Moreover,compound 1 with dual functionalities of open metal sites(OMSs)and N-rich Lewis basic sites(LBSs)exhibits good CO_(2) adsorption(92 cm^(3) g^(-1) at 273 K)and high-effect separation ability(9.6 for CO_(2)/CH_(4)=0.5/0.5 under 1 bar at 298 K).展开更多
基金supported by the National Natural Science Foundation of China(No.21771078,21671074,and 21621001)the 111 Project(B17020)the National Key Research and Development Program of China(2016YFB0701100).
文摘Two novel porous MOFs,[Cu_(2)Cl(TZI)(H_(2)O)_(3)]·4DMA(compound 1)and[Cu_(2)(TZI)(OH)(DMF)]·DMF·H_(2)O(compound 2)(H_(3)TZI=5-(tetrazol-5-yl)isophthalic acid,DMA=N,N-dimethylacetamide,and DMF=N,N-dimethylformamide),have been successfully synthesized using the same ligand consisting of isophthalate and tetrazolate groups and CuCl_(2)·2H_(2)O through the secondary building unit(SBU)strategy.Both compounds are constructed from copper cluster-based SBUs.Compound 1 is made up of two different cages based on a Cu paddlewheel and rare-reported double-crown like hexanuclear Cu cluster.In this SBU,the Cu atom adopts a five-coordination in a trigonal bipyramidal configuration,which is very rare in reported MOFs.Moreover,compound 1 with dual functionalities of open metal sites(OMSs)and N-rich Lewis basic sites(LBSs)exhibits good CO_(2) adsorption(92 cm^(3) g^(-1) at 273 K)and high-effect separation ability(9.6 for CO_(2)/CH_(4)=0.5/0.5 under 1 bar at 298 K).
