Twisted Cucurbit[n]urils
Twisted Cucurbit[n]urils
复制标题
扭曲的葫芦[n]urils
DOI：
10.1021/acs.orglett.6b01842
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发表时间：
2016-08-19
期刊：
影响因子：
5.2
通讯作者：
Wei, Gang
中科院分区：
文献类型：
--
作者：
Li, Qing;Qiu, Sheng-Chao;Wei, Gang
合成并分离了两种新的扭体瓜环化合物--瓜环[13]脲（tQ[13]）和瓜环[15]脲（tQ[15]），并通过核磁共振谱、MALDI-TOF质谱和X射线衍射分析确定了它们的结构。{Dy（H2O）（4）Cd（H2O）（4）tQ[13]}中心点2.5[CdCl 4]-65 H（2）O和{Cd-0.5（H2O）（2）tQ[15]}中心点[CdCl 4]中心点47 H（2）O。tQ[15]是迄今报道的Q[n]家族中最大的葫芦[n]脲（Q[n]）。两种配合物的X-射线衍射研究表明，这些大到[n]的配合物有效地显示出两个不同的空腔，一个中心空腔和两个侧空腔。初步的主-客体行为的每个新的系统，通过NMR研究进行了调查。
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)(4)Cd(H2O)(4)tQ[13]}center dot 2.5[CdCl4]-65H(2)O and {Cd-0.5(H2O)(2)tQ[15]}center dot [CdCl4]center dot 47H(2)O. 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 to[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.