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 language | English |
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Pages (from-to) | 4020-4023 |
Number of pages | 4 |
Journal | Organic Letters |
Volume | 18 |
Issue number | 16 |
DOIs | |
Publication status | Published - 19 Aug 2016 |
Bibliographical note
Publisher Copyright:© 2016 American Chemical Society.
Keywords
- cucurbiturils
- mass spectrometry
- nuclear magnetic resonance spectroscopy