Cage clusters are a discrete chemically and topologically diverse family of molecule-based functional materials. Presented here are two isostructural M₄₈ (M = Co^II for LSHU01, Ni^II for LSHU02) cage clusters with a merohedral icosahedral cage structure featuring 12 M₄-TC4A (H₄TC4A, p-tert-butylthiacalix[4]arene) second building units as vertices and 18 asymmetric 5-(1H-tetrazol-1-yl)isophthalate ligands as faces. They are the highest-nuclearity cage compounds of Co^II and Ni^II. The activated Co₄₈ cage exhibited high selectivity in the sorption of C₃H₈ over CH₄ under ambient conditions. Frequency response experiments indicated that the extrinsic voids and matrix interface of the activated crystalline samples are primarily responsible for the observed gas adsorption performance.

中文翻译：

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由 thiacalix[4] 芳烃支持的二面体二十面体 M48（M = CoII、NiII）笼簇†

笼状簇是一种离散的化学和拓扑多样化的基于分子的功能材料家族。这里介绍的是两个同构 M ₄₈ （对于LSHU01，M = Co ^II ；对于LSHU02 ，M = Co ^II）笼簇，具有二面体二十面体笼结构，具有 12 M ₄ -TC4A（H ₄ TC4A，对叔丁基硫杂杯[4]芳烃）第二个结构单元作为顶点，18 个不对称 5-(1 H-四唑-1-基)间苯二甲酸酯配体作为面。^{它们是Co II}和Ni ^II的最高核笼型化合物。活化的Co ₄₈笼在环境条件下相对于CH _{4表现出对C 3} H ₈的高选择性吸附。频率响应实验表明，活化晶体样品的外在空隙和基质界面是观察到的气体吸附性能的主要原因。