Solvatothermal Syntheses and Structural Characterizations of Polyoxoalkoxometalates: The Heptanuclear [{Fe(OH)(CH3CN)2} Fe6OCl6 {(OCH2)3CCH2OH}4], the Decanuclear [Fe10O2Cl8{(OCH2) 3CCH2CH3}6], and the Bimetallic

Robert C. Finn, Jon Zubieta

Research output: Contribution to journalArticle

29 Scopus citations

Abstract

Solvatothermal syntheses have been exploited to effect the isolation of three novel polyoxoalkoxometalate clusters, [{Fe(OH)(CH3CN)2} Fe6OCl6{(OCH2)3 CCH2OH}4] (1), [Fe10O2Cl8{(OCH2) 3CCH2CH3}6] (2), and [(VO)2Fe8O2 Cl6{(OCH2)3CCH2CH3} 6] (3). The structure of 1 may be described as a hexametalate core {Fe6OCl6}10+, consisting of a octahedral arrangement of chloride ligands encasing an octahedron of six Fe(III) sites, with a central oxo group. The remaining four coordination sites at each octahedral iron center are occupied by doubly bridging oxygen donors from the trisalkoxo ligands. One triangular face of this substructure, defined by three oxygen atoms, from three adjacent trisalkoxo ligands, is capped by the {Fe(OH)(CH3CN)2}2+ subunit. The structure of 2 is based on the decametalate core of edge-sharing octahedra. The eight peripheral Fe(III) sites of the cluster bond to four oxygen donors from the trisalkoxo ligands, a terminal Cl- ligand, and one of the μ6-oxo groups. The two central iron sites are linked to four oxygen donors from the trisalkoxo ligands and to both of the μ6-oxo groups. Cluster 3 is structurally related to 2 with two {FeCl}2+ units replaced by {VO}2+ groups.

Original languageEnglish (US)
Pages (from-to)461-482
Number of pages22
JournalJournal of Cluster Science
Volume11
Issue number4
DOIs
StatePublished - Jan 1 2000

Keywords

  • Decametalate core
  • Hexametalate core
  • Iron cluster
  • Mixed iron-vanadium cluster
  • Polyoxoalkoxometalate

ASJC Scopus subject areas

  • Biochemistry
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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