title: Heterometallic hexanuclear cluster with an S = 8 spin ground state: MnII[MnII(hfac)2]3[NiII(pao)3]2 (hfac- = hexafluoroacetylacetonate, pao- = pyridine-2-aldoximate).
abstract: The heterometallic Mn(II)(4)Ni(II)(2) title compound has been synthesized and characterized by X-ray crystallography. The compound consists of a Ni-Mn-Ni linear moiety, [[Ni-(mu-NO)(3)](2)-Mn], linked by oximate bridges and three Mn(II) hfac terminal units attached by oximate oxygens in a di-mu-oxo fashion, forming a novel heterometallic cluster: Mn[Mn(hfac)(2)](3)[Ni(pao)(3)](2) (1). Magnetic measurements reveal the antiferromagnetic nature of the oximate pathway between Mn(II) and Ni(II) metal ions, which imposes an unusual high-spin ground state (S = 8) for 1.
authors.affiliation: Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Minami-ohsawa 1-1, Hachioji, Tokyo 192-0397, Japan. miyasaka@comp.metro-u.ac.jp
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Miyasaka
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Nezu
authors.forename: Fumiyasu
authors.initials: F
authors.lastname: Iwahori
authors.forename: Sachie
authors.initials: S
authors.lastname: Furukawa
authors.forename: Kunihisa
authors.initials: K
authors.lastname: Sugimoto
authors.forename: Rodolphe
authors.initials: R
authors.lastname: Clérac
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Sugiura
authors.forename: Masahiro
authors.initials: M
authors.lastname: Yamashita