Optimization of Single-Molecule Magnets by Suppression of Quantum Tunneling of the Magnetization

Oldengott J, Schnack J, Glaser T (2020)
European Journal of Inorganic Chemistry 20(34): 3222-3235.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
OA 3.01 MB
Abstract / Bemerkung
The ligand system triplesalen was rationally designed following requirements for polynuclear 3d single‐molecule magnets (SMMs). The essential central part is the C3 symmetric, meta‐phenylene bridging unit phloroglucinol for ferromagnetic interactions via the spin‐polarization mechanism. The triplesalen‐based [MnIII6CrIII]3+ SMMs strongly suppress the quantum tunneling of the magnetization (QTM) but exhibit blocking temperatures not exceeding 2 K. We have analyzed the reason for this behavior and found that the triplesalen ligands are not in the anticipated aromatic phloroglucinol form but in a non‐aromatic heteroradialene form. Here we present our strategies to optimize the triplesalen ligand system to suppress the heteroradialene formation and to enforce ferromagnetic interactions. This allowed us to study in detail the influence of exchange coupling on the QTM and relaxation properties of SMMs and provides valuable insights for further rational improvements of our triplesalen ligand system and of SMMs in general.
Stichworte
Inorganic Chemistry
Erscheinungsjahr
2020
Zeitschriftentitel
European Journal of Inorganic Chemistry
Band
20
Ausgabe
34
Seite(n)
3222-3235
eISSN
1099-0682
Page URI
https://pub.uni-bielefeld.de/record/2945916

Zitieren

Oldengott J, Schnack J, Glaser T. Optimization of Single-Molecule Magnets by Suppression of Quantum Tunneling of the Magnetization. European Journal of Inorganic Chemistry. 2020;20(34):3222-3235.
Oldengott, J., Schnack, J., & Glaser, T. (2020). Optimization of Single-Molecule Magnets by Suppression of Quantum Tunneling of the Magnetization. European Journal of Inorganic Chemistry, 20(34), 3222-3235. doi:10.1002/ejic.202000507
Oldengott, J., Schnack, J., and Glaser, T. (2020). Optimization of Single-Molecule Magnets by Suppression of Quantum Tunneling of the Magnetization. European Journal of Inorganic Chemistry 20, 3222-3235.
Oldengott, J., Schnack, J., & Glaser, T., 2020. Optimization of Single-Molecule Magnets by Suppression of Quantum Tunneling of the Magnetization. European Journal of Inorganic Chemistry, 20(34), p 3222-3235.
J. Oldengott, J. Schnack, and T. Glaser, “Optimization of Single-Molecule Magnets by Suppression of Quantum Tunneling of the Magnetization”, European Journal of Inorganic Chemistry, vol. 20, 2020, pp. 3222-3235.
Oldengott, J., Schnack, J., Glaser, T.: Optimization of Single-Molecule Magnets by Suppression of Quantum Tunneling of the Magnetization. European Journal of Inorganic Chemistry. 20, 3222-3235 (2020).
Oldengott, Jan, Schnack, Jürgen, and Glaser, Thorsten. “Optimization of Single-Molecule Magnets by Suppression of Quantum Tunneling of the Magnetization”. European Journal of Inorganic Chemistry 20.34 (2020): 3222-3235.
Alle Dateien verfügbar unter der/den folgenden Lizenz(en):
Creative Commons Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International (CC BY-NC-ND 4.0):
Volltext(e)
Access Level
OA Open Access
Zuletzt Hochgeladen
2020-09-17T10:04:00Z
MD5 Prüfsumme
e3ff8732196701e91a2a8fce45d8becd

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Suchen in

Google Scholar