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Issue 16, 2000
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Interaction of benzene and 1,2-bis(chloromercurio)tetrafluorobenzene. Supramolecular frameworks based on Hg  Cl, Hg  F, Hg  π and π–π interactions

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Abstract

The crystallization of 1,2-bis(chloromercurio)tetrafluorobenzene (1) from a mixture of THF and benzene yields 1·THF·0.5C6H6 (2), which contains the Lewis base–Lewis acid adduct 1·μ-THF associated to benzene. When 1 is crystallized from a mixture of propylene oxide and benzene, a compound of composition 1·1.5C6H6 (3) is obtained. Both 2 and 3 have been analyzed by solid-state 13C CP/MAS NMR spectroscopy and their structures have been investigated by X-ray crystallography. The solid state structure of 2 is that of a framework wherein layers of 1·μ-THF are linked by pillars of sandwiched benzene molecules. The cohesion of this framework results from the presence of intermolecular Hg  Cl interactions as well as arene-1,2-bis(chloromercurio)tetrafluorobenzene π–π stacking interactions. The crystal structure of 3 reveals the existence of parallel polymeric chains of 1 embedded in a benzene matrix in which the benzene molecules adopt an edge-to-face arrangement. The polymeric chains of 1 are formed by Hg  Cl and Hg  F interactions that link the monomers. Finally, part of the benzene molecules in 3 interacts with molecules of 1 by Hg  π rather than π–π stacking interactions.

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Publication details

The article was received on 15 Feb 2000, accepted on 15 Jun 2000 and first published on 25 Jul 2000


Article type: Paper
DOI: 10.1039/B001420F
J. Chem. Soc., Dalton Trans., 2000, 2861-2865

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    Interaction of benzene and 1,2-bis(chloromercurio)tetrafluorobenzene. Supramolecular frameworks based on Hg  Cl, Hg  F, Hg  π and π–π interactions

    J. R. Gardinier and F. P. Gabbaï, J. Chem. Soc., Dalton Trans., 2000, 2861
    DOI: 10.1039/B001420F

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