Sheng Xinru, Li Errui, Huang Feihe
State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China.
Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China.
Beilstein J Org Chem. 2020 Dec 2;16:2954-2959. doi: 10.3762/bjoc.16.245. eCollection 2020.
We report novel pseudorotaxanes based on the complexation between pillar[4]arene[1]quinone and 1,10-dibromodecane. The complexation is found to have a 1:1 host-guest complexation stoichiometry in chloroform but a 2:1 host-guest complexation stoichiometry in the solid state. From single crystal X-ray diffraction, the linear guest molecules thread into cyclic pillar[4]arene[1]quinone host molecules in the solid state, stabilized by CH∙∙∙π interactions and hydrogen bonds. The bromine atoms at the periphery of the guest molecule provide convenience for the further capping of the pseudorotaxanes to construct rotaxanes.
我们报道了基于柱[4]芳烃[1]醌与1,10 - 二溴癸烷之间络合作用的新型准轮烷。研究发现，该络合作用在氯仿中具有1:1的主客体络合化学计量比，而在固态下为2:1的主客体络合化学计量比。通过单晶X射线衍射可知，在固态中，线性客体分子穿入环状柱[4]芳烃[1]醌主体分子中，通过CH∙∙∙π相互作用和氢键得以稳定。客体分子外围的溴原子为准轮烷进一步封端以构建轮烷提供了便利。
