Título:
Self-assembly of lanthanide-based single-ion magnets (SIMs) into 1D networks via Re(IV)-based metalloligands
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Autor:
Ferrari-Argachá, Carolina
Valiero, Santiago
Rojas-Dotti, Carlos
Loaces, Aparicio
Chiozzone, Raúl
Moliner, Nicolás
Suescun, Leopoldo
Cano, Joan
Lloret, Francesc
Martínez-Lillo, José
González, Ricardo
Valiero, Santiago
Rojas-Dotti, Carlos
Loaces, Aparicio
Chiozzone, Raúl
Moliner, Nicolás
Suescun, Leopoldo
Cano, Joan
Lloret, Francesc
Martínez-Lillo, José
González, Ricardo
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Artículo
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Palabras clave:
Lantanidos
Magnetismo molecular
Magnetismo molecular
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Año de publicación:
2025
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Resumen:
Within the research field of Molecular Magnetism, single-ion magnets (SIMs) are of particular interest due to their ability to retain magnetic memory at the molecular level. At the same time, one-dimensional coordination polymers enable controlled spatial arrangement of magnetic centers, making them valuable models for investigating magneto-structural correlations. Here, we report the synthesis, crystal structure, magnetic properties and theoretical calculations of a family of five one-dimensional Re(IV)-Ln(III) coordination complexes obtained by using the “complex-as-ligand” strategy and based on the pyridinedicarboxylic acid derivatives, that form the [ReBr5(3,4-pydcH2)]- and [ReBr5(3,5-pydcH2)]- metalloligands, with general formula (NBu4)2{Ln(EtOH)(dpkOEt)[ReBr5(3,5-Hpydc)]2}n·3.5H2O·MeOH [Ln = Dy(2), Tb(3)] and {Ln[ReBr5(3,4-pydc)](dmf)3(MeOH)}n·dmf [Ln = Dy(4), Tb(5), Gd(6)]. Two of these Re(IV)-Ln(III) compounds —[Dy(EtOH)(dpkOEt){ReBr₅(3,5-Hpydc)}₂]n (2) and [Dy{ReBr₅(3,4-pydc)}(dmf)₃(MeOH)]n (4) — exhibit slow relaxation of the magnetisation, which is characteristic of SIM behaviour and accounted for ac magnetic susceptibility measurements. Structural analyses suggest that intra- and intermolecular halogen–halogen (Br···Br) interactions may influence the magneto-structural properties of 2-6. These findings demonstrate the potential of Re(IV)-Ln(III) hybrid systems as candidates for developing magnetically addressable molecular materials.
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Royal Society of Chemistry
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Dalton Transactions, v. 55, pp. 854-864
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Citación:
Ferrari-Argachá, C., Valiero, S., Rojas-Dotti, C. et al. "Self-assembly of lanthanide-based single-ion magnets (SIMs) into 1D networks via Re(IV)-based metalloligands". Dalton Transactions [en línea] v. 55, pp. 854-864
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Licencia Creative Commons Atribución - No Comercial - Sin Derivadas (CC - By-NC-ND 4.0)
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| Ficheros | Descripción | Tamaño | Formato | Disponible a partir de | |||
|---|---|---|---|---|---|---|---|
| Revised_Manuscript Self-assembly of lanthanide.pdf | — | 933.57 KB | Adobe PDF | Solicitar copia | 02/12/2026 |