Synthesis, structure and magnetic properties of lanthanide(III) complexes with new imidazole-substituted imino nitroxide radical

Toshiaki Tsukuda, Takayoshi Suzuki, Sumio Kaizaki

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21 Citations (Scopus)


Synthesis, characterization and magnetic properties of new lanthanide-radical complexes, [LnIII(hfac)3(IM2imH)] (Ln = Gd, Tb; IM2imH = 2-(2-pyridyl)-4,5-dihydro-4,4,5,5-tetramethyl-1H-imidazolyl-1- oxy), are described. The molecular structure of the [Tb(hfac) 3(IM2imH)] has been determined by the X-ray diffraction. The magnetic susceptibility data for [Gd(hfac)3(IM2imH)] show that the Gd-IM2imH magnetic interaction is antiferromagnetic with an exchange coupling constant J = -2.59 cm-1 in contrast to the ferromagnetic interaction in most of Gd(III) complexes containing paramagnetic center, which will be examined in connection with planarity of the IM2imH chelate.

Original languageEnglish
Pages (from-to)1253-1257
Number of pages5
JournalInorganica Chimica Acta
Issue number4
Publication statusPublished - Mar 1 2005



  • Imino nitroxide radical ligand
  • Lanthanide complexes
  • Magnetic interaction

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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