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Bioinorganic Chemistry and Applications
Volume 2010 (2010), Article ID 159656, 7 pages
http://dx.doi.org/10.1155/2010/159656
Research Article

Use of the 2-Pyridinealdoxime/N,N′-Donor Ligand Combination in Cobalt(III) Chemistry: Synthesis and Characterization of Two Cationic Mononuclear Cobalt(III) Complexes

1Department of Chemistry, University of Patras, 26500 Patras, Greece
2Institute of Materials Science, NCSR “Demokritos”, 15310 Aghia Paraskevi Attikis, Greece

Received 31 March 2010; Accepted 27 May 2010

Academic Editor: Elena Milaeva

Copyright © 2010 Konstantis F. Konidaris et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The use of 2-pyridinealdoxime (paoH)/N,-donor ligand (L-L) “blend” in cobalt chemistry has afforded two cationic mononuclear cobalt(III) complexes of the general type [Co(pao(L-L), where L-L = 1,10-phenanthroline (phen) and 2,-bipyridine (bpy). The CoC/paoH/L-L (1 : 2 : 1) reaction system in MeOH gives complexes [C(pao(phen)]Cl2O (12O) and [C(pao(bpy)]Cl1.5MeOH (21.5MeOH). The structures of the complexes were determined by single-crystal X-ray crystallography. The C ions are six-coordinate, surrounded by three bidentate chelating ligands, that is, two pa and one phen or bpy. The deprotonated oxygen atom of the pa ligand remains uncoordinated and participates in hydrogen bonding with the solvate molecules. IR data of the complexes are discussed in terms of the nature of bonding and the known structures.