Secondary interactions in the isomorphous compounds 2,6‐bis(chloromethyl)pyridinium chloride and 2,6‐bis(bromomethyl)pyridinium bromide |
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Authors: | Virginia Lozano Peter G. Jones |
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Abstract: | The title compounds, C7H8Cl2N+·Cl− and C7H8Br2N+·Br−, are isomorphous. In the crystal packing, layers parallel to the ac plane are formed by a classical N+—H⋯X− hydrogen bond (X = halogen) and two X⋯X contacts. A third X⋯X contact links the layers, and a fourth, which is however very long, completes a ladder‐like motif of halogen atoms. Hydrogen bonds of the form C—H⋯X play at best a subordinate role in the packing. |
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