title: New topologies in pentanuclear nickel/oximato clusters: structural and magnetic characterization.
abstract: In the present work, five new Ni5 clusters employing the versatile 2-pyridylcyanoxime ligand have been synthesized and chemically, structurally, and magnetically characterized. The crystallographic examination of these Ni5 clusters together with those already published in the literature, giving a total number of 14 complexes, exhibiting up to 8 different topologies for which the relationship between topology, reaction conditions and magnetic response has been analyzed. DC magnetic measurements were carried in the 300-2 K range for the new complexes and the analysis of the experimental data revealed an antiferromagnetic response for the oximato mediated interactions with a variety of ground states (S = 0, 1, 3) as function of the cluster topology.
authors.affiliation: Departament de Química Inorgànica, Universitat de Barcelona , Avinguda Diagonal 645, 08028 Barcelona, Spain.
authors.forename: Jordi
authors.initials: J
authors.lastname: Esteban
authors.forename: Mercè
authors.initials: M
authors.lastname: Font-Bardia
authors.forename: José Sánchez
authors.initials: JS
authors.lastname: Costa
authors.forename: Simon J
authors.initials: SJ
authors.lastname: Teat
authors.forename: Albert
authors.initials: A
authors.lastname: Escuer
mesh_terms: D018360:Crystallography, X-Ray; D008280:Magnetics; D009532:Nickel / Q000737:chemistry*
chemical_list: D009532:Nickel