title: New synthetic route toward heterometallic 3d-3d' and 3d-4f single-molecule magnets. The first Co(II)-Mn(III) heterometallic complex.
abstract: Four tetranuclear heterometallic complexes, [Co(II)2Mn2(III)(dpm)4(MeO)6] (1) and [Ln(III)2Mn(III)2(dpm)6(MeO)6(MeOH)n], where Ln = Gd (2, n = 2), Tb (3, n = 2), and Dy (4, n = 0), have been obtained following the same general synthetic route, namely, the one-pot reaction between 2,2,6,6-tetrametil-3,5-heptanodione (Hdpm), MnCl2 and CoCl2 or Ln(NO3)3 in the presence of sodium methoxide. Within the four compounds, the metal ions bridged by methoxide ligands display a defect-diheterocubane core. Compounds 1, 3, and 4 show slow relaxation of the magnetization below 4 K.
authors.affiliation: Instituto de Química, Universidade Federal Fluminense, 24020-150 Niterói (RJ), Brazil.
authors.forename: Guilherme P
authors.initials: GP
authors.lastname: Guedes
authors.forename: Stéphane
authors.initials: S
authors.lastname: Soriano
authors.forename: Luiza A
authors.initials: LA
authors.lastname: Mercante
authors.forename: Nivaldo L
authors.initials: NL
authors.lastname: Speziali
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Novak
authors.forename: Marius
authors.initials: M
authors.lastname: Andruh
authors.forename: Maria G F
authors.initials: MG
authors.lastname: Vaz