Molecular storage solutions for incorporating small molecules in crystalline matrices are of interest in the context of structure elucidation, decontamination, and slow release of active ingredients. Here we report the syntheses of 1,3,5,7‐tetrakis(2,4‐dimethoxyphenyl)adamantane, 1,3,5,7‐tetrakis(4‐methoxyphenyl)adamantane, 1,3,5,7‐tetrakis(4‐methoxy‐2‐methylphenyl)adamantane, and 1,3,5,7‐tetrakis(4‐methoxy‐2‐ethylphenyl)adamantane, together with their X‐ray crystal structures. All four compounds crystallize readily. Only the octaether shows an unusual level of (pseudo)polymorphism in its crystalline state, combined with the ability to include a number of different small molecules in its crystal lattices. A total of 20 different inclusion complexes with guest molecules as different as ethanol or trifluorobenzene were found. For nitromethane and benzene, schemes for uptake and release are presented.

中文翻译：

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四（二甲氧基苯基）金刚烷（TDA）及其结晶态的包合物：小分子的多功能载体。

在结构阐明，去污和活性成分缓慢释放的背景下，用于将小分子掺入晶体基质的分子存储溶液是令人关注的。在这里我们报告了1,3,5,7-四（2,4-二甲氧基苯基）金刚烷，1,3,5,7-四（4-甲氧基苯基）金刚烷，1,3,5,7-四（ 4-甲氧基-2-甲基苯基）金刚烷和1,3,5,7-四（4-甲氧基-2-乙基苯基）金刚烷，以及它们的X射线晶体结构。所有四种化合物均易于结晶。只有八醚在其晶态下显示出异常水平的（伪）多态性，并具有在其晶格中包含许多不同的小分子的能力。总共发现了20种不同的包合物，其客体分子与乙醇或三氟苯不同。