title: Polynuclear cobalt(II/III) sulfites: synthesis, structure, and magnetic properties of the octanuclear cluster (NH4)11(Li subset[Co4IICo4III(SO3)16(NH3)8]).10H2O encapsulating a lithium cation.
abstract: Partial oxidation of an aqueous solution of CoIICl(2).6H2O with (NH4)6[Mo7VIO24].4H2O in the presence of (NH4)2SO3.H2O and LiCl, at pH approximately 5.3, leads to isolation of the octanuclear cluster (NH4)11(Li subset[Co4IICo4III(SO3)16(NH3)8].10H2O), 1. The structure of the anion of 1 consists of a central [Co4II], almost ideal square planar unit, and a pair of symmetry-related CoIII dimers above and below the Co4II plane grafting onto the tetramer by 16 bridging sulfite groups. The [Co8(SO3)16(NH3)8]12- cluster encapsulates a lithium cation which lies at the center of the Co4II square.
authors.affiliation: tkampano@cc.uoi.gr.
authors.forename: George I
authors.initials: GI
authors.lastname: Chilas
authors.forename: Marios
authors.initials: M
authors.lastname: Stylianou
authors.forename: Maciej
authors.initials: M
authors.lastname: Kubicki
authors.forename: Tiverios
authors.initials: T
authors.lastname: Vaimakis
authors.forename: Paul
authors.initials: P
authors.lastname: Kögerler
authors.forename: Anastasios D
authors.initials: AD
authors.lastname: Keramidas
authors.forename: Themistoklis A
authors.initials: TA
authors.lastname: Kabanos