American Chemical Society
ol502869u_si_004.cif (87.26 kB)

[2]Pseudorotaxanes and [2]Catenanes Constructed by Oxacalixcrowns/Viologen Molecular Recognition Motifs

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posted on 2014-11-21, 00:00 authored by Hua Liu, Xiao-Yan Li, Xiao-Li Zhao, Yahu A. Liu, Jiu-Sheng Li, Biao Jiang, Ke Wen
Oxacalix­[2]­arene­[2]­pyrazine and functional polyether derived oxacalixcrown-6, -7, and -8 were synthesized, and their host–guest complexation with paraquat to form [2]­pseudorotaxanes was studied. The [2]­pseudorotaxanes were then successfully used in the construction of two oxacalixcrown-tetracationic cyclophane [CBPQT4+] based [2]­catenanes.