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Issue 38, 2013
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The synthesis of networks based on the coordination of cucurbit[8]urils and alkali or alkaline earth ions in the presence of the polychloride transition-metal anions

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Abstract

To extend the strategy for the induced formation of cucurbit[n]uril–metal by a third species, we introduced alkali or alkaline earth metal ions (Malkali or alkaline earth metal) into cucurbit[8]uril (Q[8])–HCl systems in the presence of polychloride transition-metal anions. The polychloride transition-metal anions acted as structure inducers. A series of Q[8]–Malkali or alkaline earth metal complexes and their corresponding two-dimensional (2D) supramolecular assemblies were first synthesized and characterized by single-crystal X-ray diffraction analysis. The crystal structural analysis revealed that the Q[8]-based trigonal-planar branches in the related compounds are the key building blocks for the construction of the novel 2D Q[8]–Malkali or alkaline earth metal networks in which one or two alkali or alkaline earth metal ions link three Q[8] molecules through direct coordination. Moreover, the novel 2D Q[8]–Malkali or alkaline earth metal networks have a honeycomb shape with hexagonal “nanoholes”. The superimposition of the 2D networks could create novel nanochannels which numerous water molecules and counter anions could occupy.

Graphical abstract: The synthesis of networks based on the coordination of cucurbit[8]urils and alkali or alkaline earth ions in the presence of the polychloride transition-metal anions

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Publication details

The article was received on 11 May 2013, accepted on 15 Jul 2013 and first published on 17 Jul 2013


Article type: Paper
DOI: 10.1039/C3CE40840J
Citation: CrystEngComm, 2013,15, 7709-7717

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    The synthesis of networks based on the coordination of cucurbit[8]urils and alkali or alkaline earth ions in the presence of the polychloride transition-metal anions

    N. Ji, X. Cheng, L. Liang, X. Xiao, Y. Zhang, S. Xue, Z. Tao and Q. Zhu, CrystEngComm, 2013, 15, 7709
    DOI: 10.1039/C3CE40840J

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