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Figgis, B.N., Gerloch, M., Lewis, J., Mabbs, F.E. and Webb, G.A. (1968) The magnetic behaviour of cubic-field 4T1g terms in lower symmetry. Journal of Chemical Society A, 1, 2086-2093. doi:10.1039/j19680002086

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• TITLE: Magnetic analyses of isosceles tricobalt(II) complexes containing two types of octahedral high-spin cobalt(II) ions

  AUTHORS: Hiroshi Sakiyama, Harry Adams, David E. Fenton, Laura R. Cummings, Paul E. McHugh, Hisashi Okawa

  KEYWORDS: Tricobalt(II) Complex; Magnetic Properties; Spin-Orbit Coupling; Exchange Interaction

  JOURNAL NAME: Open Journal of Inorganic Chemistry, Vol.1 No.3, October 24, 2011

  ABSTRACT: The observed magnetic data for two isosceles tricobalt(II) complexes have been successfully analyzed, considering the axial distortion around each cobalt(II) ion, the local spin-orbit coupling, the anisotropic exchange interactions, and the intermolecular exchange interactions. The complexes each contains two types of octahedral high-spin cobalt(II) ions (CoA and CoB) in the shape of an isosceles triangle (CoA1–CoB–CoA2), and the contribution of the orbital angular momentum is significant. The exchange interaction between the CoA and CoB ions is practically negligible (J = ~ 0), whereas the interaction between the CoA1 and CoA2 ions is ferromagnetic (J’ > 0) for both complexes.