Advancing Magnesium–Organic Porous Materials through New Magnesium Cluster Chemistry

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• 作者：Quan-Guo Zhai ; Xianhui Bu ; Xiang Zhao ; Chengyu Mao ; Fei Bu ; Xitong Chen ; Pingyun Feng
• 刊名：Crystal Growth & Design
• 出版年：2016
• 出版时间：March 2, 2016
• 年：2016
• 卷：16
• 期：3
• 页码：1261-1267
• 全文大小：429K
• ISSN：1528-7505

文摘

While synthesis of materials with novel topologies is important, it can be even more impactful to create new modular structural units capable of serving as a versatile pool of connectors for rational design of targeted solids. Here we report five magnesium–organic frameworks (denoted as CPM-201 to -205) exhibiting step-by-step evolution of trimeric clusters from unprecedented core-less [Mg₃(COO)₆], to OH-centered [Mg₃(μ₃-OH)(COO)₆]⁻, and eventually to two variations of pentamers [Mg₅(μ₃-OH)₂(COO)₈] formed from fusion of trimers. New clusters are joined by dicarboxylates into trigonal-bipyramidal, cuboidal, and octahedral cages embedded in the labyrinth of hexagonal and cubic channels. These materials exhibit high CO₂ uptake and CO₂/CH₄ selectivity.