Effect of the Ligand Field Geometry on the Slow Magnetization Relaxation in Mononuclear Dysprosium Complexes
Two mononuclear complexes containing a Dy(III) ion with eight- and nine-coordinate environments have been successfully synthesized and structurally characterized by single-crystal X-ray crystallography. The coordination spheres of 1 and 2 exhibit the distorted spherical capped square antiprism and square antiprism geometries. Magnetic measurements reveal that both of the complexes show typical single-molecule magnetic behavior, and only complex 2 presents a butterfly hysteresis loop. Ab initio calculations also show the difference of the magnetic anisotropy of the Dy(III) ions in 1 and 2. The relationship between the coordination geometry and the magnetic property is discussed.
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Document Type: Research Article
Publication date: September 1, 2018
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