Helical zinc complexes of pyrazine-pyridine hybrids

Dias, Sandra I. G. and Heirtzler, Fenton R. and Bark, T. and Labat, Gael and Neels, Antonia (2004) Helical zinc complexes of pyrazine-pyridine hybrids. Polyhedron, 23 (6). pp. 1011-1017. ISSN 0277-5387. (The full text of this publication is not available from this repository)

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Abstract

The zinc(II) complexes 1aZnCl(2) and 1bZnCl(2) (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 Xray crystallography and H-1 NMR spectroscopy. Both complexes display proton deshielding phenomena that are attributed to a twisted solution-state molecular conformation. In the solid state, 1aZnCl(2) 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 1bZnCl(2) are indicative of a partial self-assembly motif.

Item Type: Article
Additional information: 30 PERGAMON-ELSEVIER SCIENCE LTD 810AR
Uncontrolled keywords: pyrazine; pyridine; X-ray; NMR; stacking; twist
Subjects: Q Science
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: Maggie Francis
Date Deposited: 18 Sep 2008 14:38
Last Modified: 01 Jul 2014 14:19
Resource URI: http://kar.kent.ac.uk/id/eprint/11349 (The current URI for this page, for reference purposes)
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