Coordination enhancement of single-molecule magnet behavior of Tb(III)-Cu(II) dinuclear systems

Takashi Kajiwara, Kohei Takahashi, Tomonari Hiraizumi, Shinya Takaishi, Masahiro Yamashita

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

Tb(III)-Cu(II) based single-molecule magnets (SMMs) were synthesized to investigate the relationship between magnetic anisotropy and the symmetry of the ligand field, by the reaction of [TbCu(o-vanilate)2(NO3)3] with 2,2-dimethyl-1,3-propanediamine (3), followed by the reaction of one another equivalent of o-vaniline (4). Both complexes behave as SMM in the temperature range of 2.8-4.0 K (3) and 2.8-5.2 K (4), showing semi-circle shapes of Cole-Cole plots with α parameters in the ranges of 0.27-0.41 and 0.11-0.32. The energy barriers Δ/kB for the spin flippings were estimated from the Arrhenius plots to be 29(2) K for 3 and 32.2(6) K for 4, respectively.

Original languageEnglish
Pages (from-to)1860-1863
Number of pages4
JournalPolyhedron
Volume28
Issue number9-10
DOIs
Publication statusPublished - 2009 Jun 22

Keywords

  • Copper
  • Schiff base ligand
  • Single-molecule magnet
  • Terbium

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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