Starting from a well-known hexanuclear mixed-valent manganese cluster, we report a synthetic protocol for its extension toward very large 3d-4f clusters. The exemplary case study demonstrates that a combination of such Mn6 clusters with a DyIII salt and an auxiliary triazine-type ligand yields a large bean-like, heterometallic dotriacontanuclear mixed-valent nanocluster [Mn26Dy6O16(OH)12(O2CCHMe2)42]. This compound, which possesses a molecular C2 symmetry and crystallizes in a dense packing arrangement without inclusion of solvents, comprises 16 MnIII, 10 MnII, and 6 DyIII ions, thus leading to a plurality of intracluster magnetic exchange interactions. Interestingly, this results in the highest-nuclearity Mn-Dy cluster that shows a single-molecule magnetic (SMM) behavior.
Aggregation of a Giant Bean-like Mn26Dy6 Heterometallic Oxo-Hydroxo-Carboxylate Nanosized Cluster from a Hexanuclear Mn6 Precursor / Darii, M.; Kravtsov, V. C.; Kramer, K.; Hauser, J.; Decurtins, S.; Liu, S. -X.; Affronte, M.; Baca, S. G.. - In: CRYSTAL GROWTH & DESIGN. - ISSN 1528-7483. - 20:1(2020), pp. 33-38. [10.1021/acs.cgd.9b01333]
Aggregation of a Giant Bean-like Mn26Dy6 Heterometallic Oxo-Hydroxo-Carboxylate Nanosized Cluster from a Hexanuclear Mn6 Precursor
Affronte M.Membro del Collaboration Group
;
2020
Abstract
Starting from a well-known hexanuclear mixed-valent manganese cluster, we report a synthetic protocol for its extension toward very large 3d-4f clusters. The exemplary case study demonstrates that a combination of such Mn6 clusters with a DyIII salt and an auxiliary triazine-type ligand yields a large bean-like, heterometallic dotriacontanuclear mixed-valent nanocluster [Mn26Dy6O16(OH)12(O2CCHMe2)42]. This compound, which possesses a molecular C2 symmetry and crystallizes in a dense packing arrangement without inclusion of solvents, comprises 16 MnIII, 10 MnII, and 6 DyIII ions, thus leading to a plurality of intracluster magnetic exchange interactions. Interestingly, this results in the highest-nuclearity Mn-Dy cluster that shows a single-molecule magnetic (SMM) behavior.
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