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Antiferromagnetic interactions in a distorted cubane-type tetranuclear manganese cluster

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, , Citation E Kampert et al 2010 J. Phys.: Conf. Ser. 200 022022 DOI 10.1088/1742-6596/200/2/022022

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1 High Field Magnet Laboratory, Institute for Molecules and Materials, Radboud University Nijmegen, 6525ED Nijmegen, The Netherlands

2 Molecular Materials, Institute for Molecules and Materials, Radboud University Nijmegen, 6525ED Nijmegen, The Netherlands

3 Theory of Condensed Matter, Institute for Molecules and Materials, Radboud University Nijmegen, 6525ED Nijmegen, The Netherlands

4 Homogeneous and Supramolecular Catalysis, Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, 1018WV Amsterdam, The Netherlands

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1742-6596/200/2/022022

Abstract

We have synthesized a new tetranuclear manganese cluster with a distorted cubane-like [Mn4O4]-core. High field magnetization experiments reveal an intramolecular antiferromagnetic coupling between the four manganese ions. We explain our results both qualitatively and quantitatively by a simple spin square model in terms of four equal antiferromagnetic exchange interactions in the core with coupling strengths of J = -1.69 K.

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10.1088/1742-6596/200/2/022022