Mononuclear and Dinuclear Manganese(II) Complexes from the Use of Methyl(2-pyridyl)ketone Oxime

doi:10.1155/2010/960571

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Bioinorganic Chemistry and Applications
Volume 2010 (2010), Article ID 960571, 9 pages
doi:10.1155/2010/960571

Research Article

Mononuclear and Dinuclear Manganese(II) Complexes from the Use of Methyl(2-pyridyl)ketone Oxime

Constantinos G. Efthymiou,^1,2 Vassilios Nastopoulos,¹ Catherine Raptopoulou,³ Anastasios Tasiopoulos,⁴ Spyros P. Perlepes,¹ and Constantina Papatriantafyllopoulou²

¹Department of Chemistry, University of Patras, 265 04 Patras, Greece
²Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA
³Institute of Materials Science, National Centre of Scientific Research “Demokritos”, 153 10 Aghia Paraskevi Attikis, Greece
⁴Department of Chemistry, University of Cyprus, 1678 Nicosia, Cyprus

Received 23 March 2010; Accepted 3 May 2010

Academic Editor: Evy Manessi-Zoupa

Copyright © 2010 Constantinos G. Efthymiou 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 reactions of methyl(2-pyridyl)ketone oxime, (py)C(Me)NOH, with manganese(II) sulfate monohydrate have been investigated. The reaction between equimolar quantities of MnSO4⋅H2O and (py)C(Me)NOH in H2O lead to the dinuclear complex [Mn2(SO4)2{(py)C(Me)NOH}4]⋅(py)C(Me)NOH, 1⋅(py)C(Me)NOH, while employment of NaOMe as base affords the compound [Mn(HCO2)2{(py)C(Me)NOH}2] (2). The structures of both compounds have been determined by single crystal X-ray diffraction. In both complexes, the organic ligand chelates through its nitrogen atoms. The IR data are discussed in terms of the nature of bonding and the structures of the two complexes.