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Issue 1, 2017
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A study of the interaction between inverted cucurbit[7]uril and symmetric viologens

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Abstract

The interaction between inverted cucuribit[7]uril (iQ[7]) and a series of symmetric viologen derivatives bearing aliphatic substituents of variable length, namely dicationic dialkyl-4,4′-bipyridinium guests where the alkyl is CH3(CH2)n with n = 0 to 6, has been studied in aqueous solution by 1H NMR spectroscopy, electronic absorption spectroscopy, isothermal titration calorimetry and mass spectrometry. In the case of both n = 5 (HV2+) and 6 (SV2+), single crystal X-ray diffraction revealed the composition to be [(iQ[7])2(HV)2][CdCl3Br][H3O+]2[H2O]12.5 and (iQ[7])2(C7-SV)1.5[CdCl4]4(H3O+)5(H2O)8, respectively, with both adopting an external B-type structure (the alkyl chains of the viologen reside within the iQ[7]).

Graphical abstract: A study of the interaction between inverted cucurbit[7]uril and symmetric viologens

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Publication details

The article was received on 05 Oct 2016, accepted on 29 Nov 2016 and first published on 05 Jan 2017


Article type: Paper
DOI: 10.1039/C6RA24780F
RSC Adv., 2017,7, 461-467
  • Open access: Creative Commons BY license
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    A study of the interaction between inverted cucurbit[7]uril and symmetric viologens

    Z. Gao, D. Bai, L. Chen, Z. Tao, X. Xiao, T. J. Prior and C. Redshaw, RSC Adv., 2017, 7, 461
    DOI: 10.1039/C6RA24780F

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