Exchange Interactions in a Dinuclear Manganese (II) Complex with Cyanopyridine-N-oxide Bridging Ligands

The structure and magnetic properties of oligonuclear manganese complex [Mn(hfa)2cpo]2 (where hfa is hexafluoroacetylacetonate dehydrate and cpo is 4-cyanopyridine-N-oxide) are presented. In the unit cell, the dinuclear molecules are well isolated from each other. The non-monotonous dependence of ma...

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Bibliographic Details
Published in:arXiv.org 2013-12
Main Authors: Markosyan, A S, I Yu Gaidukova, Ruchkin, A V, Anokhin, A O, V Yu Irkhin, Ryazanov, M V, Kuz'mina, N P, Nikiforov, V N
Format: Article
Language:English
Subjects:
Computer simulation
Coordination compounds
Dehydration
Dependence
Dimers
Exchanging
Magnetic permeability
Magnetic properties
Manganese
Thermodynamic properties
Unit cell
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Summary:The structure and magnetic properties of oligonuclear manganese complex [Mn(hfa)2cpo]2 (where hfa is hexafluoroacetylacetonate dehydrate and cpo is 4-cyanopyridine-N-oxide) are presented. In the unit cell, the dinuclear molecules are well isolated from each other. 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 in a dimer approximation by an extrapolation to spin S = 5/2. The Mn-Mn exchange integral is evaluated.
ISSN:2331-8422
DOI:10.48550/arxiv.1211.6288