title: Synthesis, structural characterization and magnetic behaviour of a family of [CoLn] butterfly compounds.
abstract: We have successfully prepared and structurally characterized a family of butterfly-like [CoLn] complexes where all magnetic properties are due to the Ln(iii) ions. The complexes with Ln = Tb(1), Dy(2), Ho(3), Er(4) and Yb(5) are iso-structural. An exception is the complex with Ln = Gd(6) which strings in a one dimensional chain. The structural similarity together with the high tendency of the crystallites to align under an applied magnetic field allowed an overall DC magnetic data treatment to extract phenomenological crystal field parameters and hence to determine the ground state multiplet energy level splitting. The Dy(iii) member is the only one showing slow relaxation of magnetization under zero DC applied field, while all the others need a small DC applied field.
authors.affiliation: Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE (CONICET), Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina. albores@qi.fcen.uba.ar.
authors.forename: Alejandro V
authors.initials: AV
authors.lastname: Funes
authors.affiliation: Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg - Universität Mainz, Duesbergweg 10-14, D-55128, Mainz, Germany.
authors.forename: Luca
authors.initials: L
authors.lastname: Carrella
authors.affiliation: Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569, Stuttgart, Germany.
authors.forename: Yvonne
authors.initials: Y
authors.lastname: Rechkemmer
authors.affiliation: Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569, Stuttgart, Germany.
authors.forename: Joris
authors.initials: J
authors.lastname: van Slageren
authors.affiliation: Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg - Universität Mainz, Duesbergweg 10-14, D-55128, Mainz, Germany.
authors.forename: Eva
authors.initials: E
authors.lastname: Rentschler
authors.affiliation: Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE (CONICET), Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina. albores@qi.fcen.uba.ar.
authors.forename: Pablo
authors.identifier: http://orcid.org/0000-0002-6181-4521
authors.initials: P
authors.lastname: Alborés