Twisted cucurbit[n]urils

Qing Li, Sheng-Chao Qiu, Jing Zhang, Kai Chen, Ying Huang, Xin Xiao, Yingjie Zhang, Feng Li, Yun-Qian Zhang, Sai-Feng Xue, Zhu Tao, Leonard F. Lindoy, Gang Wei

Research output: Contribution to journalArticlepeer-review

132 Citations (Scopus)

Abstract

Two new twisted cucurbiturils, cucurbit[13]uril (tQ[13]) and cucurbit[15]uril (tQ[15]), have been synthesized and separated, and their structures have been confirmed by NMR spectroscopy and MALDI-TOF mass spectrometry together with the X-ray structures of two new complexes, {Dy(H2O)4Cd(H2O)4tQ[13]}"¢2.5 [CdCl4]"¢65H2O and {Cd0.5(H2O)2tQ[15]}"¢[CdCl4]"¢47H2O. tQ[15] is the largest cucurbit[n]uril (Q[n]) in the Q[n] family reported to date. The X-ray diffraction studies of both complexes indicated that these large tQ[n]s effectively exhibit two different cavities-a central cavity and two side cavities. Preliminary host-guest behavior by each of the new systems was investigated by NMR studies.
Original languageEnglish
Pages (from-to)4020-4023
Number of pages4
JournalOrganic Letters
Volume18
Issue number16
DOIs
Publication statusPublished - 19 Aug 2016

Bibliographical note

Publisher Copyright:
© 2016 American Chemical Society.

Keywords

  • cucurbiturils
  • mass spectrometry
  • nuclear magnetic resonance spectroscopy

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