Topology is playing an important role for the reticular chemistry of metal–organic frameworks (MOFs). We herein report two isostructural rare-earth amide-functionalized MOFs by virtue of topology-guided strategy and solvothermal reactions. Both MOFs display the desired (3,8,12)-c pek topological network and encompass dual cage-like and channel pore geometry replete with amide functionality. Low-pressure gas adsorption measurements show that both materials exhibit relatively high surface areas and pore volumes. Moreover, both materials selectively adsorb propylene over ethylene in a wide range of composition as revealed by high C₃H₆/C₂H₄ uptake rations and IAST selectivity.

拓扑在金属有机骨架 (MOF) 的网状化学中发挥着重要作用。我们在此通过拓扑引导策略和溶剂热反应报告了两种同构稀土酰胺功能化 MOF。两种 MOF 都显示出所需的 (3,8,12)-c pek拓扑网络，并包含充满酰胺功能的双笼状和通道孔几何结构。低压气体吸附测量表明，这两种材料都表现出相对较高的表面积和孔隙体积。此外，如高 C ₃ H ₆ /C ₂ H ₄吸收比和 IAST 选择性所揭示的，这两种材料在广泛的组成范围内选择性地吸附丙烯而不是乙烯。