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Magnetic “Molecular Oligomers” Based on Decametallic Supertetrahedra: A Giant Mn49 Cuboctahedron and its Mn25Na4 Fragment |
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| Authors: | Dr. Maria Manoli Sofia Alexandrou Dr. Linh Pham Dr. Giulia Lorusso Dr. Wolfgang Wernsdorfer Dr. Marco Evangelisti Prof. George Christou Dr. Anastasios J. Tasiopoulos |
| Affiliation: | 1. Department of Chemistry, University of Cyprus, 1678 Nicosia (Cyprus);2. Department of Chemistry, University of Florida, Gainesville, FL 32611‐7200 (USA);3. Current address: Texas A&M University‐Central Texas, Department of Science and Mathematics, Killeen, TX 76549 (USA);4. Instituto de Ciencia de Materiales de Aragón and Departamento de Física de la Materia Condensada, CSIC‐Universidad de Zaragoza, 50009 Zaragoza (Spain);5. Institut Neel, CNRS, BP 166, 25 Avenue des Martyrs, 38042 Grenoble Cedex 9 (France) |
| Abstract: | Two nanosized Mn49 and Mn25Na4 clusters based on analogues of the high‐spin (S=22) [MnIII6MnII4(μ4‐O)4]18+ supertetrahedral core are reported. Mn49 and Mn25Na4 complexes consist of eight and four decametallic supertetrahedral subunits, respectively, display high virtual symmetry (Oh), and are unique examples of clusters based on a large number of tightly linked high nuclearity magnetic units. The complexes also have large spin ground‐state values (Mn49: S=61/2; Mn25Na4: S=51/2) with the Mn49 cluster displaying single‐molecule magnet (SMM) behavior and being the second largest reported homometallic SMM. |
| Keywords: | cluster compounds magnetic properties manganese O ligands single‐molecule magnets |