Modulating Magnetic Performance in DyIII Single Ion Magnets With N5O2 Ligands

IF 3.7 2区化学 Q2 CHEMISTRY, APPLIED Applied Organometallic Chemistry Pub Date : 2024-08-12 DOI:10.1002/aoc.7684

Matilde Fondo, Paula Oreiro-Martínez, Julio Corredoira-Vázquez, Ana M. García-Deibe, Jesús Sanmartín-Matalobos, Daniel Aravena

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Abstract

[Dy (L^Me)(H₂O)]CF₃SO₃·0.25H₂O (1·0.25H₂O), where H₂L^Me is the reported ligand 2,2′-(((pyridine-2,6-diylbis (methylene))bis((pyridin-2-ylmethyl)azanediyl))bis (methylene))bis(4-methylphenol), shows the Dy^III ion in an N₅O₃ environment, with triangular dodecahedral geometry (D_2d symmetry). 1·0.25H₂O is a single ion magnet (SIM) with an energy barrier for spin reversal of 510 K, and open hysteresis loops up to 8 K. The magnetostructural comparison of 1·0.25H₂O with some closely related complexes and with other eight-coordinated SIMs with high energy barriers (> 300 K) allows to draw some conclusions to enhance the magnetic performance in these nanomagnets with non-purely axial geometries. Ab initio calculations complement and support the experimental results.

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用 N5O2 配体调节 DyIII 单离子磁体的磁性能

[Dy (LMe)(H2O)]CF3SO3-0.25H2O（1-0.25H2O），其中 H2LMe 是已报道的配体 2,2′-(((吡啶-2,6-二基双(亚甲基))双((吡啶-2-基甲基)偶氮二基))双(亚甲基))双(4-甲基苯酚)，显示了 N5O3 环境中的 DyIII 离子，具有三角形十二面体几何（D2d 对称性）。1-0.25H2O 是一种单离子磁体 (SIM)，其自旋反转的能垒为 510 K，开放磁滞环高达 8 K。将 1-0.25H2O 与一些密切相关的复合物以及其他具有高能垒（> 300 K）的八配位 SIM 进行磁结构比较，可以得出一些结论，从而提高这些具有非纯轴向几何结构的纳米磁体的磁性能。Ab initio 计算补充并支持了实验结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Organometallic Chemistry 化学-无机化学与核化学

CiteScore

7.80

自引率

10.30%

发文量

408

审稿时长

2.2 months

期刊介绍： All new compounds should be satisfactorily identified and proof of their structure given according to generally accepted standards. Structural reports, such as papers exclusively dealing with synthesis and characterization, analytical techniques, or X-ray diffraction studies of metal-organic or organometallic compounds will not be considered. The editors reserve the right to refuse without peer review any manuscript that does not comply with the aims and scope of the journal. Applied Organometallic Chemistry publishes Full Papers, Reviews, Mini Reviews and Communications of scientific research in all areas of organometallic and metal-organic chemistry involving main group metals, transition metals, lanthanides and actinides. All contributions should contain an explicit application of novel compounds, for instance in materials science, nano science, catalysis, chemical vapour deposition, metal-mediated organic synthesis, polymers, bio-organometallics, metallo-therapy, metallo-diagnostics and medicine. Reviews of books covering aspects of the fields of focus are also published.

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