Ferromagnetic interactions in metal complexes with imino nitroxides

H. Oshio, M. Yamamoto, N. Hoshino, T. Ito

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Copper(II), nickel(II), and zinc(II) complexes with tridentate imino nitroxyl diradicals, [CuCl(bisimpy)(MeOH)](PF6) (1), [NiCl(bisimpy)(H2O)2]Cl·2H2O (2), and [ZnCl2(bisimpy)] (3) (bisimpy = 2,6-bis(1′-oxyl-4′,4′,5′,5′-tetramethyl- 4′,5′-dihydro-1′H-imidazol-2′-yl)pyridine), were prepared and their magnetic properties studied. In 1-3 the diradicals are ferromagnetically coupled with the inter-radical coupling constant of J = + 6.5 cm-1. In 1 and 2 the ferromagnetic interactions between the paramagnetic metal ions and the coordinated imino nitroxides are operative with the J values of + 165 and + 120 cm-1 (H = -2JijΣSiSj), respectively. Magnetic properties of a Cu(II) complex with a mono radical ligand, [CuCl2(impy)] (4) (impy = 2-(1′-oxyl-4′,4′,5′,5′tetramethyl- 4′,5′-dihydro-1′H-imidazol-2′-yl)pyridine), were also studied; a ferromagnetic coupling constant of J = + 50(2) cm-1 was obtained.

Original languageEnglish
Pages (from-to)1621-1625
Number of pages5
Issue number11-14
Publication statusPublished - 2001 May 30
Externally publishedYes


  • Ferromagnetic interactions
  • Imino nitroxides
  • Magnetic properties
  • Metal complexes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry


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