6533b82dfe1ef96bd1291263
RESEARCH PRODUCT
Solvent-induced high-spin transition in double-decker 3d–4f metallacrowns
T. MashoffChen LuoChen LuoC. GamerA. KredelFlorin RaduEva RentschlerH. J. ElmersL. VölkerA. RauguthA. AlhassanatA. A. Sapozhniksubject
Materials scienceSpin statesMagnetic momentMagnetic circular dichroismSpin transition02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesSpin magnetic momentCrystallographySpin crossover0103 physical sciencesCondensed Matter::Strongly Correlated Electrons010306 general physics0210 nano-technologyMultipletMetallacrowndescription
Element-specific magnetic spin and orbital magnetic moments of $3d\text{\ensuremath{-}}4f$ double-decker metallacrown molecules have been investigated using x-ray magnetic circular dichroism. The double-decker metallacrowns comprise one rare-earth Gd(III) or Tb(III) ion embedded between two squared scaffolds of four Ni(II) ions. We observe a strong increase of the Ni(II) moments if the molecules are dissolved in methanol, indicating a spin crossover from a low-spin to a high-spin state. In contrast, dichloromethane does not change the spin state. This result is explained by a change of the coordination environment of nickel. The comparison of charge-transfer multiplet calculations with the experimental absorption spectra confirm the different ligand fields.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-03-04 | Physical Review B |