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Issue 34, 2017
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Self-assembly of conducting cocrystals via iodine⋯π(Cp) interactions

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Abstract

Conducting crystals of alternating ferrocene and diiodoacetylene units assembled into supramolecular 1-D chains via I⋯π(Cp) halogen bonds were prepared and structurally characterized. Their structure and conductivity were compared with the ferrocene cocrystals with phenyliodoacetylene (C6H5C2I) and 1,4-di(ethynyliodo)phenylene. Electrical conductivity measurements of the ferrocene-based cocrystals revealed comparatively high electron–hole type conductivity in the ferrocene (FcH)–diiodoacetylene (C2I2) pair, a 3-order decrease in combination with the 1,4-di(ethynyliodo)phenylene linker, and it is virtually extinguished with the monotopic 1,2-phenyliodoacetylene. The increased electric conductivity of compound 1 is rationalized in terms of a weak charge transfer through the I⋯πCp halogen bonds in the [Cp–Fe–Cp⋯I–C[triple bond, length as m-dash]C–I⋯]n polymeric chains.

Graphical abstract: Self-assembly of conducting cocrystals via iodine⋯π(Cp) interactions

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Publication details

The article was received on 06 May 2017, accepted on 26 Jul 2017 and first published on 26 Jul 2017


Article type: Paper
DOI: 10.1039/C7CE00857K
Citation: CrystEngComm, 2017,19, 5114-5121
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    Self-assembly of conducting cocrystals via iodine⋯π(Cp) interactions

    Y. V. Torubaev, K. A. Lyssenko, P. Y. Barzilovich, G. A. Saratov, M. M. Shaikh, A. Singh and P. Mathur, CrystEngComm, 2017, 19, 5114
    DOI: 10.1039/C7CE00857K

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