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Issue 10, 2000
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Crown ethers as pre-organised exo-receptors in the divergent recognition of α,ω-diiodoperfluoroalkanes

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Abstract

Both the nitrogen atoms of Kryptofix® 2.2. 1 act as electron-donors to the iodine atoms of α,ω-diiodoperfluoroalkanes 2a,b giving rise to infinite 1D chains 3a,b as white crystalline solids which are stable in air at room temperature. The structural features of these non-covalent co-polymers have been studied using various techniques (IR, 1H NMR, 19F NMR, X-ray diffraction) and it has been established that when Kryptofix® 2.2. is halogen bonded to iodides 2, it adopts the same conformation as when in the pure form, namely the exoexo topology. The co-existence of halogen-bonding and hydrogen-bonding in supramolecular architectures 3 suggests pre-organisation of the interacting partners as a new strategy in the rational design of divergent self-assembly processes.

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Publication details

The article was received on 21 Mar 2000, accepted on 11 Jul 2000 and first published on 19 Sep 2000


Article type: Paper
DOI: 10.1039/B002247K
Citation: New J. Chem., 2000,24, 777-780
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    Crown ethers as pre-organised exo-receptors in the divergent recognition of α,ω-diiodoperfluoroalkanes

    W. Navarrini, P. Metrangolo, T. Pilati and G. Resnati, New J. Chem., 2000, 24, 777
    DOI: 10.1039/B002247K

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