title: Synthesis and characterization of monomeric Mn (IV) and pseudo-tetrameric Mn (III) complexes: magnetic properties of Mn (III) complex.
abstract: Two novel monomer Mn (IV) [Mn(3,5-ClL1)2]⋅(CH3OH), (1), [3,5-ClL1H2=N-(2-hydroxyethyl)-3,5-dichlorosalicylaldimine] (1) and hydrogen-bonded pseudo-tetramer Mn (III) [Mn(5-BrL2)(H2O)2]2⋅[Mn(5-BrL2)(H2O)]2⋅2⋅(ClO4), (2), [5-BrL2H2=N,N'-bis(5-bromosalicylidenato)-1,2-diamino-2-methylpropane)] (2) Schiff base complexes have been synthesized and their crystal structures have been determined by single crystal X-ray diffraction analysis. A variable temperature magnetic susceptibility measurement study has been performed for complex (2) and the result indicates there is a very weak antiferromagnetic interaction (J=-0.40±0.016cm(-1)) between the two manganese (III) centers.
authors.affiliation: Balikesir University, Faculty of Art and Science, Department of Physics, Balikesir, Turkey. Electronic address: yahsi@balikesir.edu.tr.
authors.forename: Yasemin
authors.initials: Y
authors.lastname: Yahsi
authors.affiliation: Balikesir University, Faculty of Art and Science, Department of Physics, Balikesir, Turkey.
authors.forename: Hulya
authors.initials: H
authors.lastname: Kara
mesh_terms: D060328:Magnetic Phenomena; D008345:Manganese / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D012545:Schiff Bases / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D012545:Schiff Bases; D008345:Manganese
keywords: Magnetic properties; Mn (III) and Mn (IV) complexes; Schiff-base ligands; X-ray crystal structure analysis