Heterometallic CuII-DyIII Clusters of Different Nuclearities with Slow Magnetic Relaxation

Ritwik Modak, Yeasin Sikdar, Goulven Cosquer, Sudipta Chatterjee, Masahiro Yamashita, Sanchita Goswami

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

The synthesis, structures, and magnetic properties of two heterometallic CuII-DyIII clusters are reported. The first structural motif displays a pentanuclear CuII4DyIII core, while the second one reveals a nonanuclear CuII6DyIII3 core. We employed o-vanillin-based Schiff base ligands combining o-vanillin with 3-amino-1-propanol, H2vap, (2-[(3-hydroxy-propylimino)-methyl]-6-methoxy-phenol), and 2-aminoethanol, H2vae, (2-[(3-hydroxy-ethylimino)-methyl]-6-methoxy-phenol). The differing nuclearities of the two clusters stem from the choice of imino alcohol arm in the Schiff bases, H2vap and H2vae. This work is aimed at broadening the diversity of CuII-DyIII clusters and to perceive the consequence of changing the length of the alcohol arm on the nuclearity of the cluster, providing valuable insight into promising future synthetic directions. The underlying topological entity of the pentanuclear Cu4Dy cluster is reported for the first time. The investigation of magnetic behaviors of 1 and 2 below 2 K reveals slow magnetic relaxation with a significant influence coming from the variation of the alcohol arm affecting the nature of magnetic interactions.

Original languageEnglish
Pages (from-to)691-699
Number of pages9
JournalInorganic chemistry
Volume55
Issue number2
DOIs
Publication statusPublished - 2016 Jan 19

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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