An approach to networks based on coordination of alkyl-substituted cucurbit[5]urils and potassium ions

Li, Zhong-Fei, Liang, Li-Li, Wu, Feng, Zhou, Fa-Gen, Ni, Xin-Long, Feng, Xing, Xiao, Xin, Zhang, Yun-Qian, Xue, Sai-Feng, Zhu, Qian-Jiang, Clegg, Jack K., Tao, Zhu, Lindoy, Leonard F. and Wei, Gang (2013) An approach to networks based on coordination of alkyl-substituted cucurbit[5]urils and potassium ions. CrystEngComm, 15 10: 1994-2001. doi:10.1039/c3ce26491b

Author Li, Zhong-Fei
Liang, Li-Li
Wu, Feng
Zhou, Fa-Gen
Ni, Xin-Long
Feng, Xing
Xiao, Xin
Zhang, Yun-Qian
Xue, Sai-Feng
Zhu, Qian-Jiang
Clegg, Jack K.
Tao, Zhu
Lindoy, Leonard F.
Wei, Gang
Title An approach to networks based on coordination of alkyl-substituted cucurbit[5]urils and potassium ions
Journal name CrystEngComm   Check publisher's open access policy
ISSN 1466-8033
Publication date 2013-01-10
Year available 2013
Sub-type Article (original research)
DOI 10.1039/c3ce26491b
Open Access Status Not Open Access
Volume 15
Issue 10
Start page 1994
End page 2001
Total pages 8
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Collection year 2014
Language eng
Formatted abstract
We introduce an approach for the synthesis of networks based on the coordination of alkyl-substituted cucurbit[5]uril (SQ[5]), dimethylcucurbit[5]uril (DMeQ[5]), 1,3-dicyclohexanocucurbit[5]uril (1,3-DCyHQ[5]), 1,2,4-tricyclohexanocucurbit[5]uril (1,2,4 TriCyHQ[5]), 1,2,3-cyclohexanocucurbit[5]uril (1,2,3-TriCyHQ[5]), and pentacyclopentanocucurbit[5]uril (PCyPQ[5]) with K+ ions in the absence of a structure inducer. These novel SQ[5]-K+-based networks feature trigonal-planar branches constructed from three SQ[5]s and K+ ions in a triangular manner, in which the coordination of each K+ ion to the five portal carbonyl oxygen atoms of one SQ[5] as well as to a bridging portal carbonyl oxygen from an adjacent SQ[5] draws the edges of three portals into close proximity. Thus, a 3-K+-cation junction is formed at each portal of the S[5] and there are four 3-K+-cation junctions in which one or two coordinated water molecule(s) are shared by the three K+ cations in the trigonal planar branch. Detailed inspection of the relationship of the planes at the 3-K+ junction has revealed that the dihedral angles between the junction plane and the center junction plane have a strong influence on the supramolecular assembly of SQ[5] with K+ ions into 2D-networks or 3D-frameworks. Moreover, these dihedral angles determine the structural conformation of the SQ[5]-K+-based networks and the superimposition of 2D-networks in the compounds.
Keyword Aqua hydroxo complexes
Macrocyclic cavitand
Supramolecular compounds
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Chemistry and Molecular Biosciences
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Created: Fri, 15 Mar 2013, 09:49:42 EST by Mrs Louise Nimwegen on behalf of School of Chemistry & Molecular Biosciences