title: Twisted Cucurbit[n]urils.
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.
authors: Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University , Guiyang, Guizhou 550025, China.
authors: Qing
authors: Q
authors: Li
authors: Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University , Guiyang, Guizhou 550025, China.
authors: Sheng-Chao
authors: SC
authors: Qiu
authors: Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University , Guiyang, Guizhou 550025, China.
authors: Jing
authors: J
authors: Zhang
authors: 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.
authors: Kai
authors: K
authors: Chen
authors: Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University , Guiyang, Guizhou 550025, China.
authors: Ying
authors: Y
authors: Huang
authors: Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University , Guiyang, Guizhou 550025, China.
authors: Xin
authors: X
authors: Xiao
authors: Australian Nuclear Science and Technology Organisation , Locked Bag 2001, Kirrawee DC, NSW 2232, Australia.
authors: Yingjie
authors: Y
authors: Zhang
authors: School of Science and Health, Western Sydney University , Locked Bag 1797, Penrith, NSW 2751, Australia.
authors: Feng
authors: F
authors: Li
authors: Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University , Guiyang, Guizhou 550025, China.
authors: Yun-Qian
authors: YQ
authors: Zhang
authors: Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University , Guiyang, Guizhou 550025, China.
authors: Sai-Feng
authors: SF
authors: Xue
authors: Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University , Guiyang, Guizhou 550025, China.
authors: Qian-Jiang
authors: QJ
authors: Zhu
authors: Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University , Guiyang, Guizhou 550025, China.
authors: Zhu
authors: Z
authors: Tao
authors: School of Chemistry, The University of Sydney , Sydney, NSW 2006, Australia.
authors: Leonard F
authors: LF
authors: Lindoy
authors: CSIRO Manufacturing , P.O. Box 218, Lindfield, NSW 2070, Australia.
authors: Gang
authors: G
authors: Wei