| Crystal Engineering of Brominated Tectons: N-Methyl-3,5-dibromo-pyridinium Iodide Gives Particularly Short C-Br···I Halogen Bonding |
| New J. Chem. 2004, 28(6), 760 |
| T. A. Logothetis, F. Meyer, P. Metrangolo, T. Pilati, G. Resnati |
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| Single helice of the N-methyl-3,5-dibromo-pyridinium iodide viewed down the b-axis. |
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The crystal matrix of N-methyl-3,5-dibromopyridinium io-dide is constituted by infinite helices where the cation and the anion alternate and are bound by the second shortest C-Br···I halogen bonding. The electron poor pyridinium scaffold is particularly effective in boosting the electron acceptor ability of bromine substituents.
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