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Citation: Dawei LI, Rui HU, Suyun SHI, Yeye SHE, Xiamei ZHANG, Yahong LI, Yiquan ZHANG, Jinlei YAO. Two Dy4 complexes based on a Schiff base ligand and two benzoates: Synthesis, structures, and single-molecule magnetic properties[J]. Chinese Journal of Inorganic Chemistry, ;2024, 40(2): 307-315. doi: 10.11862/CJIC.20230324 shu

Two Dy4 complexes based on a Schiff base ligand and two benzoates: Synthesis, structures, and single-molecule magnetic properties

  • 1.

    College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China

  • 2.

    Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, China

  • 3.

    Henan College of Transportation, Zhengzhou 451460, China

  • 4.

    Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou, Jiangsu 215009, China

Figures(6)

  • Two Dy4 clusters with the formulae [Dy4(L)4(PhCO2)2(NO3)2(EtOH)2] (1) and [Dy4(L)4(2-NO2-PhCO2)2(NO3)2(EtOH)2] (2) were obtained by the reactions of Dy(NO3)3·6H2O with a Schiff base ligand 2-(((2-hydroxy-3-methoxy-benzyl)imino)methyl)-4-methoxyphenol (H2L) and two auxiliary ligands PhCO2H and 2-NO2-PhCO2H in ethanol. Single crystal X-ray diffraction studies evidenced that the two complexes are constructed from Dy2 units, and display a centrosymmetric tetranuclear linear chain structure. One metal center in the Dy2 unit in 1 and 2 presents a sevencoordinated geometry, and the other Dy(Ⅲ) ion displays an eight-coordinated geometry. Both complexes are identified as single-molecule magnets with energy barriers of 110 and 108 K, respectively. Theoretical calculations also analyzed the magnetic properties of 1 and 2.
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