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Insight into ferromagnetic interactions in Cu II –Ln III dimers with a compartmental ligand

Panja, Anangamohan; Paul, Sagar 1; Moreno-Pineda, Eufemio; Herchel, Radovan; Jana, Narayan Ch; Brandão, Paula; Novitchi, Ghenadie; Wernsdorfer, Wolfgang 1,2
1 Physikalisches Institut (PHI), Karlsruher Institut für Technologie (KIT)
2 Institut für QuantenMaterialien und Technologien (IQMT), Karlsruher Institut für Technologie (KIT)

Abstract:

In the last two decades, efforts have been devoted to obtaining insight into the magnetic interactions between CuII and LnIII utilizing experimental and theoretical means. Experimentally, it has been observed that the exchange coupling (J) in CuII–LnIII systems is often found to be ferromagnetic for ≥4f7 metal ions. However, exchange interactions at sub-Kelvin temperatures between CuII and the anisotropic/isotropic LnIII ions are not often explored. In this report, we have synthesized a series of heterobimetallic [CuLn(HL)(μ-piv)(piv)2] complexes (LnIII = Gd (1), Tb (2), Dy (3) and Er (4)) from a new compartmental Schiff base ligand, N,N’-bis(3-methoxy-5-methylsalicylidene)-1,3-diamino-2-propanol (H3L). X-ray crystallographic analysis reveals that all four complexes are isostructural and isomorphous. Magnetic susceptibility measurements reveal a ferromagnetic coupling between the CuII ion and its respective LnIII ion for all the complexes, as often observed. Moreover, μ-SQUID studies, at sub-Kelvin temperatures, show S-shaped hysteresis loops indicating the presence of antiferromagnetic coupling in complexes 1–3. ... mehr

Zugehörige Institution(en) am KIT Institut für QuantenMaterialien und Technologien (IQMT)
Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 14.02.2024
Sprache Englisch
Identifikator ISSN: 1477-9226, 1477-9234
KITopen-ID: 1000168243
HGF-Programm 47.12.02 (POF IV, LK 01) Exploratory Qubits
Erschienen in Dalton Transactions
Verlag Royal Society of Chemistry (RSC)
Band 53
Heft 6
Seiten 2501–2511
Vorab online veröffentlicht am 27.12.2023
Nachgewiesen in Scopus
Dimensions
Web of Science

Verlagsausgabe §
DOI: 10.5445/IR/1000168243
Veröffentlicht am 08.02.2024
Originalveröffentlichung
DOI: 10.1039/d3dt03557c
Scopus
Zitationen: 9
Web of Science
Zitationen: 7
Dimensions
Zitationen: 9
Seitenaufrufe: 60
seit 08.02.2024
Downloads: 38
seit 08.02.2024
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