{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["15(1)"],"submitter":["Errulat D"],"pubmed_abstract":["Single-ion anisotropy is vital for the observation of Single-Molecule Magnet (SMM) properties (i.e., a slow dynamics of the magnetization) in lanthanide-based systems. In the case of europium, the occurrence of this phenomenon has been inhibited by the spin and orbital quantum numbers that give way to J = 0 in the trivalent state and the half-filled population of the 4f orbitals in the divalent state. Herein, by optimizing the local crystal field of a quasi-linear bis(silylamido) Eu<sup>II</sup> complex, the [Eu<sup>II</sup>(N{SiMePh<sub>2</sub>}<sub>2</sub>)<sub>2</sub>] SMM is described, providing an example of a europium complex exhibiting slow relaxation of its magnetization. This behavior is dominated by a thermally activated (Orbach-like) mechanism, with an effective energy barrier of approximately 8 K, determined by bulk magnetometry and electron paramagnetic resonance. Ab initio calculations confirm second-order spin-orbit coupling effects lead to non-negligible axial magnetic anisotropy, splitting the ground state multiplet into four Kramers doublets, thereby allowing for the observation of an Orbach-like relaxation at low temperatures."],"journal":["Nature communications"],"pagination":["3010"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11001981"],"repository":["biostudies-literature"],"pubmed_title":["Slow magnetic relaxation in a europium(II) complex."],"pmcid":["PMC11001981"],"pubmed_authors":["Rouzieres M","Hill S","Harriman KLM","Errulat D","van Tol J","Clerac R","Galico DA","Mansikkamaki A","Murugesu M","Salerno EV"],"additional_accession":[]},"is_claimable":false,"name":"Slow magnetic relaxation in a europium(II) complex.","description":"Single-ion anisotropy is vital for the observation of Single-Molecule Magnet (SMM) properties (i.e., a slow dynamics of the magnetization) in lanthanide-based systems. In the case of europium, the occurrence of this phenomenon has been inhibited by the spin and orbital quantum numbers that give way to J = 0 in the trivalent state and the half-filled population of the 4f orbitals in the divalent state. Herein, by optimizing the local crystal field of a quasi-linear bis(silylamido) Eu<sup>II</sup> complex, the [Eu<sup>II</sup>(N{SiMePh<sub>2</sub>}<sub>2</sub>)<sub>2</sub>] SMM is described, providing an example of a europium complex exhibiting slow relaxation of its magnetization. This behavior is dominated by a thermally activated (Orbach-like) mechanism, with an effective energy barrier of approximately 8 K, determined by bulk magnetometry and electron paramagnetic resonance. Ab initio calculations confirm second-order spin-orbit coupling effects lead to non-negligible axial magnetic anisotropy, splitting the ground state multiplet into four Kramers doublets, thereby allowing for the observation of an Orbach-like relaxation at low temperatures.","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Apr","modification":"2025-04-05T15:07:39.915Z","creation":"2025-04-05T15:07:39.915Z"},"accession":"S-EPMC11001981","cross_references":{"pubmed":["38589348"],"doi":["10.1038/s41467-024-46196-w"]}}