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首页> 外文期刊>Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics >A Family of (CoCo3III)-Co-II Single-Ion Magnets with Zero-Field Slow Magnetic Relaxation: Fine Tuning of Energy Barrier by Remote Substituent and Counter Cation
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A Family of (CoCo3III)-Co-II Single-Ion Magnets with Zero-Field Slow Magnetic Relaxation: Fine Tuning of Energy Barrier by Remote Substituent and Counter Cation

机译：具有零场慢磁弛豫的（CoCo3III）-Co-II单离子磁体家族：通过远程取代和反阳离子对能垒进行微调

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The synthesis, structures, and magnetic properties of a family of air-stable star-shaped (CoCo3III)-Co-II complexes were investigated. These complexes contain only one paramagnetic Co(II) ion with the approximate D-3 coordination environment in the center and three diamagnetic Co(III) ions in the peripheral. Magnetic studies show their slow magnetic relaxation in the absence of an applied dc field, which is characteristic behavior of single-molecule magnets (SMMs), caused by the individual Co(II) ion with approximate D-3 symmetry in the center. Most importantly, it was demonstrated that the anisotropy energy barrier Can be finely tuned by the periphery substituent of the ligand and the countercation. The anisotropy energy barrier can be increased significantly from 38 K to 147 K.
机译：研究了一系列空气稳定的星形（CoCo3III）-Co-II配合物的合成，结构和磁性。这些络合物仅在中心具有大约D-3配位环境的一个顺磁性Co（II）离子，在外围具有三个反磁性Co（III）离子。磁性研究表明，它们在没有施加直流磁场的情况下会出现缓慢的磁弛豫，这是单分子磁体（SMM）的特征行为，这是由中心处具有近似D-3对称性的单个Co（II）离子引起的。最重要的是，证明了可以通过配体和抗衡阳离子的外围取代基来微调各向异性能垒。各向异性能垒可以从38 K显着增加到147 K.

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