title: A Porphyrin-Based Porous rtl Metal-Organic Framework as an Efficient Catalyst for the Cycloaddition of CO2to Epoxides.
abstract: A porous rtl metal-organic framework (MOF) [Mn5L(H2O)6⋅(DMA)2]⋅5DMA⋅4C2H5OH (1⋅Mn) (H10L=5,10,15,20-tetra(4-(3,5-dicarboxylphenoxy)phenyl)porphyrin; DMA=N,N'-dimethylacetamide) was synthesized by employing a new porphyrin-based octacarboxylic acid ligand. 1⋅Mn exhibits high MnIIdensity in the porous framework, providing it great Lewis-acid heterogeneous catalytic capability for the cycloaddition of CO2with epoxides. Strikingly, 1⋅Mn features excellent catalytic activity to the cycloaddition of CO2to epoxides, with a remarkable initial turnover frequency 400 per mole of catalyst per hour at 20 atm. As-synthesized 1⋅Mn also exhibits size selectivity to different epoxide substrates on account of their steric hindrance. The high catalytic activity, size selectivity, and stability toward the epoxides on catalytic cycloaddition of CO2make 1⋅Mn a promising heterogeneous catalyst for fixation and utilization of CO2.
authors.affiliation: Key Lab of Polyoxometalate Science, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China.
authors.forename: Wei
authors.initials: W
authors.lastname: Jiang
authors.affiliation: Key Lab of Polyoxometalate Science, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China.
authors.forename: Jin
authors.initials: J
authors.lastname: Yang
authors.affiliation: Key Lab of Polyoxometalate Science, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China.
authors.forename: Ying-Ying
authors.initials: YY
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.
authors.forename: Shu-Yan
authors.initials: SY
authors.lastname: Song
authors.affiliation: Key Lab of Polyoxometalate Science, Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China.
authors.forename: Jian-Fang
authors.initials: JF
authors.lastname: Ma
keywords: carbon dioxide; cycloaddition; epoxides; metal-organic frameworks; porphyrins