Control of structure and magnetic interaction through ligand design: One-dimensional complexes from ferromagnetic to antiferromagnetic coupling
Resource
European Journal of Inorganic Chemistry 2008 (2): 312-321
Journal
European Journal of Inorganic Chemistry
Journal Issue
2
Pages
312-321
Date Issued
2008
Author(s)
Abstract
Four unsymmetrical pyrazine- and/or 4-picoline-modulated N,N′-bis(α-pyridyl)-2,6-diaminopyridine ligands (PMN5) were synthesized and their 1D copper(II) complexes studied. When pyrazine is a terminal ring, the ligands showed inplane and out-of-plane coordination modes and led to a one-dimensional zigzag chain polymer. The orthogonal overlap of orbitals through a bridging pyrazine ring resulted in ferromagnetic interaction. Middle-ring pyrazine-modulated ligands resulted in straight one-dimensional compounds and had antiferromagnetic coupling. The EPR spectra of the compounds showed significant covalency in the Cu-N bonds. © Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
Type
journal article
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