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Secondary Bonding Interactions in Some Halopyridinium and Dihalopyridinium Halides

  • Matthias Frey and Peter G. Jones EMAIL logo
Published/Copyright: June 2, 2014
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Abstract

The packing motifs of 2-and 3-chloropyridinium chloride can be interpreted in terms of classical hydrogen bonds N+-H···Cl- and non-classical C-H···Cl-" interactions, with halo-gen-halogen contacts playing a subordinate role. In the corresponding bromine derivatives, Br···Br interactions are much more important. Of the dihalo derivatives, 3,5-dichloropyridinium chloride crystallises with classical linear hydrogen bonds of the form N+-H···Cl- , but its chlorine-chlorine interactions are at best weak; the corresponding bromine derivative displays aggregates of bromine atoms and three-centre hydrogen bonds N+-H (···Br-)2 .

Received: 2001-5-15
Published Online: 2014-6-2
Published in Print: 2001-9-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

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