Abstract
A new Dy4 cluster, namely, Dy4(acac)4L6(μ3-OH)2·4CH3CN (1) (HL = 5-(2-hydroxy-5-methylbenzylidene)-8-hydroxylquinoline, acac = acetylacetonate), has been synthesized based on a bidentate Schiff base ligand. Furthermore, elemental analysis (EA), powder X-ray diffraction (PXRD), single-crystal X-ray diffraction and magnetic properties of cluster 1 have been characterized. The X-ray structural analysis exhibits that cluster 1 is a tetranuclear dysprosium cluster with rhombus-shaped arrangement, and each Dy(III) ion of 1 is eight coordinated, and their coordination polyhedrons can be described as a distorted square-antiprismatic geometry. Magnetic properties measurement indicate that two magnetic relaxation processes phenomenon occurs for cluster 1 under 0 dc filed, with pre-exponential factor τ0 = 8.19 × 10−7 s and ΔE/kB = 37.73 K for the LT relaxation and τ0 = 4.36 × 10−8 s and ΔE/kB = 105.97 K for the HT relaxation.
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