Magnetic properties of trinuclear Ni-M-Ni complexes, M = Mn, Co and Ni

Atakol O., Boca R., Ercan I., Ercan F., Fuess H., Haase W., ...More

CHEMICAL PHYSICS LETTERS, vol.423, pp.192-196, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 423
  • Publication Date: 2006
  • Doi Number: 10.1016/j.cplett.2006.03.067
  • Journal Name: CHEMICAL PHYSICS LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.192-196
  • Hacettepe University Affiliated: Yes

Abstract

A tetradentate ligand, abbr. L2- =dmSALPD(2-) = N,N'-bis(sahcylidene)-1,3-propanediaminato dianion, has been complexed with metal ions in the presence of dimethylformamide (dmf) and nitrite anion. As a result, trinuclear molecular complexes of the type [M-II- {Ni(NO2(L2-)(dmf)}(2)], where M-II = Mn(II), Co(II) and Ni(II) were obtained. The magnetic susceptibility and magnetization data were treated simultaneously during the fitting procedure. In addition to the isotropic exchange, the zero-field splitting parameters D-A were added to the spin Hamiltonian. An anti-ferromagnetic interaction was found in all complexes and the single ion magnetic anisotropy parameter for the Ni(II) peripheral centers adopt considerable values. (c) 2006 Elsevier B.V. All rights reserved.