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From the Fe$^{III}$$_{2}$Ln$_{2}$ Butterfly’s Perspective: the Magnetic Benefits and Challenges of Cooperativity within 3 d–4 f Based Coordination Clusters

Peng, Yan 1; Kaemmerer, Hagen ORCID iD icon 1,2; Powell, Annie K. 1,2
1 Institut für Anorganische Chemie (AOC), Karlsruher Institut für Technologie (KIT)
2 Institut für QuantenMaterialien und Technologien (IQMT), Karlsruher Institut für Technologie (KIT)


The well-known oxo-centred Fe triangle is used to access the vast majority of [Fe$^{III}$$_{2}$Ln$_{2}$(μ$_{3}$-OR)$_{2}$L$_{2}$(O$_{2}$CR)$_{6}$] butterflies, since it provides a di-iron central body unit and carboxylate bridges to the wingtips, which are occupied by supplied Ln ions. The remaining coordination sites of the lanthanide are occupied by a multidentate ligand, which can also provide further bridging. This system provides a useful testbed for exploring multiple variations, for example changing the Ln, the bridging carboxylate and the nature of the chelating ligand.
In this Review we discuss the tuning handles which can be used to steer the magnetic properties of Fe$^{III}$-4 f “butterfly” compounds. The majority of presented compounds were produced in the context of project A3 “Di- to tetranuclear compounds incorporating highly anisotropic paramagnetic metal ions” within the SFB/TRR88 “3MET”. These contain {Fe$^{III}$$_{2}$Ln$_{2}$} cores encapsulated in ligand shells which are easy to tune in a “test-bed” system. We identify the following advantages and variables in such systems: (i) the complexes are structurally simple usually with one crystallographically independent Fe$^{III}$ and Ln$^{III}$ respectively. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000139366
Veröffentlicht am 29.10.2021
DOI: 10.1002/chem.202102962
Zitationen: 7
Web of Science
Zitationen: 9
Zitationen: 9
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Institut für QuantenMaterialien und Technologien (IQMT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 0947-6539, 1521-3765
KITopen-ID: 1000139366
HGF-Programm 47.12.02 (POF IV, LK 01) Exploratory Qubits
Erschienen in Chemistry - A European Journal
Verlag John Wiley and Sons
Band 27
Heft 61
Seiten 15044-15066
Vorab online veröffentlicht am 28.09.2021
Nachgewiesen in Scopus
Web of Science
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