A mononuclear Fe(III) complex showing thermally induced spin crossover and slow magnetic relaxation with reciprocating thermal behaviour

Terézia Bridová; Cyril Rajnák; Ján Titiš; Erika Samoľová; Kevin Tran; Ondřéj Malina; Alina Bieńko; Franz Renz; Milan Gembický; Roman Boča

doi:10.1039/d4dt00642a

A mononuclear Fe(III) complex showing thermally induced spin crossover and slow magnetic relaxation with reciprocating thermal behaviour

Dalton Trans. 2024 Jul 2;53(26):10824-10828. doi: 10.1039/d4dt00642a.

Authors

Affiliations

¹ Faculty of Natural Sciences, University of Ss. Cyril and Methodius, 917 01 Trnava, Slovakia. [email protected].
² Institute of Physics of the Czech Academy of Sciences, 182 21 Prague, Czech Republic.
³ Institute of Inorganic Chemistry, Leibniz University, Hannover, D-30167, Germany.
⁴ Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University Olomouc, Olomouc, Czech Republic.
⁵ Nanotechnology Centre, Centre of Energy and Environmental Technologies, VŠB-Technical University of Ostrava, Ostrava-Poruba, Czech Republic.
⁶ Faculty of Chemistry, University of Wroclaw, 14 F. Joliot-Curie, 50-383 Wroclaw, Poland.
⁷ X-ray Crystallography Facility, UC San Diego, 5128 Urey Hall MC 0358, 9500 Gilman Drive, La Jolla, CA 92093, USA.
⁸ Faculty of Health Sciences, University of Ss. Cyril and Methodius, 917 01 Trnava, Slovakia. [email protected].

PMID: 38887079
DOI: 10.1039/d4dt00642a

Abstract

AC susceptibility measurements of [Fe^III(L⁵)(NCSe)] reveal a field supported slow magnetic relaxation. On cooling, the relaxation time of the high-frequency fraction decreases which is a sign of reciprocating thermal behaviour. The relaxation time for the low-frequency mode at T = 2.0 K is as high as τ(LF) = 2.0 s.