Hexa- and octanuclear iron(III) salicylaldoxime clusters

Kevin Mason, Ian A. Gass, Fraser J. White, Giannis S. Papaefstathiou, Euan K. Brechin, Peter A. Tasker

Research output: Contribution to journalArticlepeer-review

Abstract

The syntheses, structures and magnetic properties of six iron complexes stabilised with the derivatised salicylaldoxime ligands Me-saoH(2) (2-hydroxyethanone oxime) and Et-saoH(2) (2-hydroxypropiophenone oxime) are discussed. The four hexanuclear and two octanuclear complexes of formulae [Fe8O2(OMe)(4)(Me-sao)(6)Br-4(py)(4)]center dot 2Et(2)O center dot MeOH (1.2Et(2)O center dot MeOH), [Fe8O2(OMe)(3.85)(N-3)(4.15)(Mesao)(6)(py)(2)] (2), [Fe6O2(O2CPh-4-NO2)(4)(Me-sao)(2)(OMe)(4)Cl-2(py)(2)] (3), [Fe6O2(O2CPh-4-NO2)(4)(Et-sao)(2)(OMe)(4)Cl-2(py)(2)]center dot 2Et(2)O center dot MeOH (4.2Et(2)O center dot MeOH), [HNEt3](2)[Fe6O2(Me-sao)(4)(SO4)(2)(OMe)(4)(MeOH)(2)] (5) and [HNEt3](2)[Fe6O2(Et-sao)(4)(SO4)(2)(OMe)(4)(MeOH)(2)] (6) all are built from a series of edge-sharing [Fe-4(mu(4)-O)](10+) tetrahedra. Complexes 1 and 2 display a new mu(4)-coordination mode of the oxime ligand and join a small group of Fe-phenolic oxime complexes with nuclearity greater than six.

Original languageEnglish
Pages (from-to)2875-2881
Number of pages7
JournalDalton Transactions
Volume40
Issue number12
DOIs
Publication statusPublished - 2011

Keywords

  • SINGLE-MOLECULE MAGNETS
  • FE-III
  • TETRANUCLEAR
  • COMPLEX
  • CHEMISTRY
  • CORES
  • IRON

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