Exchange interactions in a dinuclear manganese (II) complex with cyanopyridine-N-oxide bridging ligands

The magnetic properties of dinuclear manganese(II) complex [Mn(hfa)2cpo]2 (where hfa is hexafluoroacetylacetonate anion and cpo is 4-cyanopyridine-N-oxide) are presented. The non-monotonous dependence of magnetic susceptibility is explained in terms of the hierarchy of exchange parameters by using e...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2014-01, Vol.432, p.53-57
Main Authors: Markosyan, A.S., Gaidukova, I.Yu, Ruchkin, A.V., Anokhin, A.O., Irkhin, V.Yu, Ryazanov, M.V., Kuz’mina, N.P., Nikiforov, V.N.
Format: Article
Language:English
Subjects:
Computer simulation
Condensed matter
Exchange interactions
Extrapolation
Hierarchies
Ligands
Magnetic permeability
Magnetic properties
Manganese
Organic materials
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Summary:The magnetic properties of dinuclear manganese(II) complex [Mn(hfa)2cpo]2 (where hfa is hexafluoroacetylacetonate anion and cpo is 4-cyanopyridine-N-oxide) are presented. The non-monotonous dependence of magnetic susceptibility is explained in terms of the hierarchy of exchange parameters by using exact diagonalization. The thermodynamic behavior of pure cpo and [Mn(hfa)2(cpo)]2 is simulated numerically by an extrapolation to spin S=5/2. The Mn–Mn exchange integral is evaluated.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2013.09.025