Synthesis and crystal structures of some cobalt halide derivatives containing alkyl or silanolato groups

Ashrafolmolouk Asadi, Colin Eaborn, Michael S. Hill, Peter B. Hitchcock, J. David Smith

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The alkylcobalt halide [{(2-C5H4N)Me 2Si}(Me3Si)2CCoCl]2 (2) and the lithium silanolatocobaltates Li(THF)2(μ-Br)2Co(μ- OSiMe3)2Co(μ-Br)2Li(THF)2 (4) and [LiBr{Li(THF)}2{CoBr(OSiMe3)3}]2 (5) form centrosymmetrical halogen-bridged dimers in the crystalline state. Compound 4 shows bromide bridges between lithium and cobalt, and silanolato bridges between the cobalt atoms. Below 200 K there are significant antiferromagnetic interactions between the cobalt centres. Compound 5 crystallises in a novel structure in which two cubane-like fragments containing silanolato bridges are linked together through a Li2Br2 ring.

Original languageEnglish
Pages (from-to)944-951
Number of pages8
JournalJournal of Organometallic Chemistry
Volume690
Issue number4
DOIs
Publication statusPublished - 14 Feb 2005

Keywords

  • Clusters
  • Cobalt halides
  • Magnetic measurements
  • Organosilicon
  • Silanolato derivatives

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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