Two novel calix[6]arene derivatives with phenylthioureido hydrogen-bond donor (HBD) groups appended at the upper rim were investigated. The number of HBD units affects the conformation of the macrocyclic hosts and their binding abilities towards bipyridinium-based guests, as a function of their counterions.

中文翻译：

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硫脲杯[6]芳烃

研究了在上部边缘附加有苯基硫脲基氢键供体 (HBD) 基团的两种新型杯 [6] 芳烃衍生物。HBD 单元的数量影响大环主体的构象及其对基于联吡啶的客体的结合能力，作为其反离子的函数。