One unique two-dimensional (2D) Zn-MOF [Na[Zn1.5(μ4-O)(L)]}n (1) was synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction.Four Zn atoms are bridged through μ4-O to form [Zn4O] clusters,which are further linked to form a 2D layer network through sharing Zn as vertexes.1 exhibits high thermal stability up to 280 ℃ and keeps stable in common solvents and water solutions with pH ranging from 1 to 13.The catalytic studies reveal that compound 1 exhibits excellent catalytic activity for cycloaddition of CO2with epoxides into cyclic carbonates under mild conditions.Furthermore,1 demonstrates good generality in CO2 coupling reaction with extensive epoxides.Importantly,1 can be reused for at least five times without significant reduction in catalytic ability.
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