Correction: Determination of the electronic structure of a dinuclear dysprosium single molecule magnet without symmetry idealization

Perfetti, Mauro; Gysler, Maren; Rechkemmer-Patalen, Yvonne; Zhang, Peng; Taştan, Hatice; Fischer, Florian S. U.; Netz, Julia; Frey, Werner; Zimmermann, Lucas W.; Schleid, Thomas; Hakl, Michael; Орлита, М.; Ungur, Liviu; Chibotaru, Liviu F.; Brock‐Nannestad, Theis; Piligkos, Stergios; Slageren, Joris van

doi:10.1039/c9sc90051a

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“…The anisotropic magnitude of spin carriers is extremely sensitive to the tiny changes of local geometrical symmetry and ligand field. − Currently, some lanthanide-based complexes with high axial symmetry ( D 4 d , D 8 d , or D 8 h ; C 5 , C ∞ h , and C ∞ v ), especially pentagonal bipyramidal systems for D 5 h , have been successfully designed and prepared to reduce the possible mixture of m j states and to achieve the large uniaxial anisotropy of the Kramer doublets. ,− However, it is undeniable that high local symmetry is not easy to complete, owing to the inherent features of high coordination numbers and flexible coordination patterns for the lanthanide centers, as a low-symmetry system is commonly generated for the resulting compounds . Therefore, the axial ligand field becomes one of the most effective methods to modulate the easy-axis magnetic anisotropy of the SMMs. − …”

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confidence: 99%

Enhancing the Magnetic Anisotropy in Low-Symmetry Dy-Based Complexes by Tuning the Bond Length

You

Zhao

et al. 2021

Inorg. Chem.

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One mononuclear complex [Dy(Htpy)-(NO 3 ) 2 (acac)] (1) and a tpy − -extended 1D chain {[Dy(CH 3 OH)-(NO 3 ) 2 (tpy)]•CH 3 OH} n (2) (Htpy = 4′-(4-hydroxyphenyl)-2,2′:6′,2′′-terpyridine, Hacac = acetylacetone) were successfully designed to investigate the effect of bond length tuning around the Dy III cation on the magnetic dynamics of single-molecule magnets (SMMs). Interestingly, two magnetic entities possess the same local coordination sphere (N 3 O 6 -donor) as well as the configuration (Muffin, C s ) of dysprosium centers. Only a slight difference in structure results from purposefully substituting the acetylacetone ligand in 1 with hydroxyl oxygen from tpy − linkage and one methanol molecule in 2. However, the remarkable differences in dynamics behavior were clearly found between them. Compound 1 possesses a thermal-activated effective energy barrier (U eff /k B ) of 22.7 K under a 0 kOe direct current (dc) field and negligible hysteresis loop at 2.0 K, while complex 2 shows high-performance SMM behavior with the largest energy barrier of 354.36 K among the reported nine-coordinated Dy III -based systems and the magnetic hysteresis up to 4.0 K at a sweep rate of 200 Oe s −1 . These experimental results combined with the previous reported data reveal that the shortest bond and the bond length difference around the Dy III center synergistically determine the dynamics of SMMs. The uniaxial anisotropy increases with the decrease of the shortest bond and the increase of the bond length difference, which is confirmed by the theoretical calculations.

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Section: Introductionmentioning

confidence: 99%

Enhancing the Magnetic Anisotropy in Low-Symmetry Dy-Based Complexes by Tuning the Bond Length

You

Zhao

et al. 2021

Inorg. Chem.

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Correction: Determination of the electronic structure of a dinuclear dysprosium single molecule magnet without symmetry idealization

Abstract: Correction for ‘Determination of the electronic structure of a dinuclear dysprosium single molecule magnet without symmetry idealization’ by Mauro Perfetti et al., Chem. Sci., 2019, 10, 2101–2110.

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Enhancing the Magnetic Anisotropy in Low-Symmetry Dy-Based Complexes by Tuning the Bond Length

Enhancing the Magnetic Anisotropy in Low-Symmetry Dy-Based Complexes by Tuning the Bond Length

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