title: First structural and magnetic studies of Ni clusters containing 2,6-diacetylpyridine-dioxime as a ligand.
abstract: In the present work, coordination possibilities of the system dapdoH(2)/Ni(2+), being dapdoH(2) = 2,6-diacetylpyridine dioxime, have been explored, offering as a result a number of unprecedented clusters with a variety of topologies and magnetic behaviors. Depending on the precursors and reaction conditions, several compounds named [Ni(2)(dapdo)(2)] (1), [Ni(3)(OH)(BzO)(3)(dapdo)(dapdoH(2))(H(2)O)] x1.25 H(2)O (2), [Ni(3)(AcO)(4)(dapdoH)(2)(H(2)O)(2)] x H(2)O (3), and [Ni(4)(AcO)(3)(dapdo)(dapdoH)(2)(H(2)O)(3)] x (AcO) x 3 H(2)O (4) were achieved and structurally well-characterized. Dc magnetic measurements were carried out in the 2-300 K range revealing antiferromagnetic interactions for (2-4) compounds and diamagnetic response for the square planar coordinated complex (1).
authors.affiliation: Departament de Química Inorgánica and Institut de Nanociència i Nanotecnologia, Universitat de Barcelona, 08028 Barcelona, Spain. albert.escuer@ub.edu
authors.forename: Albert
authors.initials: A
authors.lastname: Escuer
authors.forename: Jordi
authors.initials: J
authors.lastname: Esteban
authors.forename: Núria
authors.initials: N
authors.lastname: Aliaga-Alcalde
authors.forename: Mercé
authors.initials: M
authors.lastname: Font-Bardia
authors.forename: Teresa
authors.initials: T
authors.lastname: Calvet
authors.forename: Olivier
authors.initials: O
authors.lastname: Roubeau
authors.forename: Simon J
authors.initials: SJ
authors.lastname: Teat