Slow Magnetic Relaxation in an Asymmetrically Coupled Heptanuclear Dysprosium(III)–Nickel(II) Architecture

  • Soumya Mukherjee
  • Biplab Joarder
  • Shufang Xue
  • Jinkui Tang
  • Sujit K. GhoshEmail author
Research Article


A new dysprosium(III)–nickel(II) heterometallic cluster, namely, [Dy 3 III Ni 4 II (L)6(OH)4(CH3OH)3(CH3CN)(NO3)(OH2)]·(CH3CN)3(CH3OH)2 (H2O)2 (1), has been synthesized from the schiff-base ligand H2L (L = o-phenolsalicylimine), dysprosium nitrate and nickel nitrate. A single-crystal X-ray diffraction study reveals that the highly asymmetric core of 1 consists of an unprecedented edge-sharing arrangement of three dissimilar Dy2Ni triangles, along with one Dy2Ni2 rectangle, connected to one side of the central metallic core. Both static (dc) and dynamic (ac) magnetic properties of 1 have been studied. The results reveal that compound 1 exhibits slow relaxation of the magnetization, making 1 a remarkable new addition to the family of Ln–Ni single molecule magnets, having a new asymmetric Ni4Dy3-architecture.

Graphical Abstract


Dysprosium Nickel Cluster compounds Asymmetry Slow magnetic relaxation 



Authors thank CSIR for SRF (B.J.). DST (project no. GAP/DST/CHE-12-0083) and IISER Pune for financial support.

Supplementary material

40010_2013_116_MOESM1_ESM.doc (1.2 mb)
Supporting Information: Experimental section, physical measurements, X-ray crystal structure determination, PXRD, TGA, FTIR and additional structural data and diagrams provided in Supporting Information. (DOC 1218 kb)


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Copyright information

© The National Academy of Sciences, India 2014

Authors and Affiliations

  • Soumya Mukherjee
    • 1
  • Biplab Joarder
    • 1
  • Shufang Xue
    • 2
  • Jinkui Tang
    • 2
  • Sujit K. Ghosh
    • 1
    Email author
  1. 1.Indian Institute of Science Education and Research (IISER) PunePuneIndia
  2. 2.State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied Chemistry, Chinese Academy of SciencesChangchunChina

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