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Pseudo-Tetrahedral vs Pseudo-Octahedral ErIII Single Molecule Magnets and the 'Disruptive' Role of Coordinated TEMPO Radicals

submitted on 27.02.2021, 10:05 and posted on 01.03.2021, 12:46 by Maria Brzozowska, Gabriela Handzlik, Katarzyna Kurpiewska, Mikołaj Zychowicz, Dawid Pinkowicz
Erbium(III) complexes are the most interesting candidates for high-performance single molecule magnets (SMMs) just after dysprosium(III). Herein, we thoroughly explore the underrepresented class of neutral pseudo-tetrahedral erbium(III) SMMs and demonstrate their exceptional slow magnetization dynamics controlled by the Raman relaxation mechanism and the molecular magnetic memory effect in the form of a waist-restricted magnetic hysteresis loop. The influence of the coordinated TEMPO radical on the slow magnetization relaxation performance is also demonstrated and discussed.


Quantum nanomagnets based on metal complexes with unusual geometry and the use of new, non-standard ligands.

National Science Center

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Functionalized helices in the construction of molecular magneto-optical materials.

Ministry of Science and Higher Education

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Email Address of Submitting Author


Jagiellonian University, Faculty of Chemistry



ORCID For Submitting Author


Declaration of Conflict of Interest

There are no conflicts to declare

Version Notes

ver 4.6, last edited on Feb 27th, 2021