Novel 5,5′-disubstituted BMP32C10 derivatives bearing different sized substituents were designed and prepared. The stoichiometries and complexation behavior between these hosts and paraquats were studied. It was found that bulky 5,5′-substituents disfavor complexation with paraquats by hindering the formation of [2]pseudorotaxane and “taco” complexes.

中文翻译：

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双(间亚苯基)-32-冠-10衍生物与百草枯络合的空间效应

设计并制备了具有不同大小取代基的新型 5,5'-二取代 BMP32C10 衍生物。研究了这些宿主与百草枯之间的化学计量和络合行为。发现庞大的 5,5'-取代基阻碍了 [2] 假轮烷和“taco”复合物的形成，从而不利于与百草枯的复合。