title: Competing ferro- and antiferromagnetic interactions in a hexagonal bipyramidal nickel thiolate cluster.
abstract: A new hexagonal bipyramidal Ni8 cluster is reported and its magnetic behaviour is analyzed. The molecular structure consists of a hexagonal wheel capped by two additional apical Ni(2+) ions. This structure supports ferromagnetic superexchange interactions between adjacent Ni(2+) ions in the wheel and an antiferromagnetic superexchange interaction between the wheel and apical Ni(2+) ions.
authors.affiliation: Department of Chemistry, Faculty of Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
authors.forename: Tomohiko
authors.initials: T
authors.lastname: Hamaguchi
authors.forename: Michael D
authors.initials: MD
authors.lastname: Doud
authors.forename: Jeremy
authors.initials: J
authors.lastname: Hilgar
authors.forename: Jeffrey D
authors.initials: JD
authors.lastname: Rinehart
authors.forename: Clifford P
authors.initials: CP
authors.lastname: Kubiak