Journal article

Helical zinc complexes of pyrazine–pyridine hybrids

  • Dias, S. I. G. School of Physical Sciences, Chemical Laboratory, University of Kent, Canterbury, UK
  • Heirtzler, Fenton School of Physical Sciences, Chemical Laboratory, University of Kent, Canterbury, UK
  • Bark, Thomas Department of Chemistry, University of Fribourg, Switzerland
  • Labat, Gael Institute of Chemistry, University of Neuchâtel, Switzerland
  • Neels, Antonia Institute of Chemistry, University of Neuchâtel, Switzerland
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    21.02.2004
Published in:
  • Polyhedron. - 2004, vol. 23, no. 6, p. 1011-1017
English The zinc(II) complexes 1aZnCl₂ and 1bZnCl₂ (1a: 2-(6',2''-bipyrid-2'-yl)-3-(2- pyridyl)pyrazine; 1b: 2-(6',2'-bipyrid-2'-yl)-5,6-dinitrilo-3-(2-pyridyl)pyrazine) were prepared by treatment of the ligands with ZnCl₂. The structures of both were investigated by X-ray crystallography and 1H NMR spectroscopy. Both complexes display proton deshielding phenomena that are attributed to a twisted solution-state molecular conformation. In the solid state, 1aZnCl₂ exhibits a high degree of torsion about the axis through the uncomplexed pyridine ring and the pendant chlorine atoms. The solid-state structure and solution-state self-associative behavior of 1bZnCl₂ are indicative of a partial self-assembly motif.
Faculty
Faculté des sciences et de médecine
Department
Département de Chimie
Language
  • English
Classification
Chemistry
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/299837
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