Structure and Magnetic Properties of a New Lattice System of the Heterometallic Decanuclear Ce6Mn4 Aggregate

Resumo

In this paper, we present a mixed valence f–d Ce₆Mn₄^III compound having formula [Ce₆^IV Mn₄^III (μ₄-O)₄ (μ₃-O)₄(O₂C^tBu)₁₂(ea)₄(OAc)₄]·H₂O (1), which is obtained by the reaction of hydrated lanthanide nitrate, pivalic acid, and ethanolamine in MeCN as a solvent. The single crystal X-ray diffraction analysis demonstrates that the central core consists of an octahedron with four triangular pyramids added to four related faces or as an octahedron encapsulated in a tetragon. The fitting of magnetization data using the anisotropic model gives D = 2.13 cm^–1 and g = 1.97 (D is the axial zero-field splitting parameter).