Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China.
Org Lett. 2012 Mar 16;14(6):1532-5. doi: 10.1021/ol300263z. Epub 2012 Mar 8.
A per-hydroxylated pillar[6]arene was prepared. Single-crystal X-ray analysis demonstrated that its molecules are arranged in an up-to-down manner to form infinite channels in the solid state. Its host-guest complexation with a series of bispyridinium salts in solution was further investigated. It was found that the per-hydroxylated pillar[6]arene could form a 1:1 complex with paraquat in acetone with an association constant of 2.2 × 10(2) M(-1). This complex is a [2]pseudorotaxane as shown by its crystal structure, which is the first pillar[6]arene-based host-guest complex crystal structure.
一种全羟化的柱[6]芳烃被制备。单晶 X 射线分析表明，其分子在固态中以自上而下的方式排列，形成无限的通道。其与一系列双吡啶盐在溶液中的主客体络合进一步被研究。结果发现，全羟化的柱[6]芳烃在丙酮中可以与百草枯形成 1:1 的配合物，其缔合常数为 2.2×10(2) M(-1)。这个配合物是一个[2]伪轮烷，这从其晶体结构中可以看出，这是第一个基于柱[6]芳烃的主客体络合晶体结构。
