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Article Dans Une Revue Chemical Society Reviews Année : 2022

Magnetic anisotropy of transition metal and lanthanide ions in pentagonal bipyramidal geometry

Résumé

The magnetic anisotropy associated with a pentagonal bipyramidal (PBP) coordination sphere is examined on the basis of experimental and theoretical investigations. The origin and the characteristics of this anisotropy are discussed in relation to the electronic configuration of the metal ions. The effects of crystal field, structural distortion, and a second-coordination sphere on the observed anisotropies for transition meal and lanthanide ions are outlined. For the Ln derivatives, we focus on compounds showing SMM-like behavior (i.e. slow relaxation of their magnetization) in order to highlight the essential chemical and structural parameters for achieving strong axial anisotropy. The use of PBP complexes to impart controlled magnetic anisotropy in polynuclear species such as SMMs or SCMs is also addressed. This review of the magnetic anisotropies associated with a pentagonal bipyramidal coordination sphere for transition metal and lanthanide ions is intended to highlight some general trends that can guide chemists towards designing a compound with specific properties.
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Dates et versions

hal-03673750 , version 1 (20-05-2022)

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Jean‐pascal Sutter, Virginie Béreau, Valentin Jubault, Kateryna Bretosh, Céline Pichon, et al.. Magnetic anisotropy of transition metal and lanthanide ions in pentagonal bipyramidal geometry. Chemical Society Reviews, 2022, 51 (8), pp.3280-3313. ⟨10.1039/D2CS00028H⟩. ⟨hal-03673750⟩
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