Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University , Guiyang, Guizhou 550025, China.
Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology , Nanjing 210044, P. R. China.
Org Lett. 2016 Aug 19;18(16):4020-3. doi: 10.1021/acs.orglett.6b01842. Epub 2016 Aug 8.
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.
两个新的扭曲的葫芦脲，葫芦[13]脲（tQ[13]）和葫芦[15]脲（tQ[15]），已经被合成并分离出来，它们的结构通过 NMR 光谱和 MALDI-TOF 质谱以及两个新配合物的 X 射线结构得到了确认，{Dy(H2O)4Cd(H2O)4tQ[13]}·2.5[CdCl4]·65H2O 和 {Cd0.5(H2O)2tQ[15]}·[CdCl4]·47H2O。tQ[15]是迄今为止报道的葫芦[n]脲（Q[n]）家族中最大的葫芦脲。两个配合物的 X 射线衍射研究表明，这些大环 tQ[n] 有效地表现出两种不同的空腔——中心空腔和两个侧空腔。通过 NMR 研究初步研究了每个新体系的主客体行为。
