Synthesis, crystal structure and electrochemistry of tetrahedral mono-β-diketonato titanocenyl complexes

Elizabeth Erasmus, Jeanet Conradie, Alfred Muller, Jannie C. Swarts

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

The synthesis of a variety of tetrahedral β-diketonato titanium(IV) complexes of the type [(C5 H5)2 Ti (CH3 COCHCOR)]+ ClO4- with R = CF3, OCH3, C6H5, CH3 and Fc is described. The TiIII/TiIV couples and the Fc/Fc+ couple exhibited chemically and electrochemically reversible cyclic voltammetric behaviour. The formal reduction potential of the TiIII/IV couple increased as the group electronegativity of the R group of the β-diketonato ligand increased. Bulk electrolysis showed that one electron was transferred in the TiIII/IV couple and one electron in the ferrocenyl/ferrocenium redox couple in the ligand. The crystal structure for the R = OCH3 complex showed that this β-keto-ester binds through the carbonyl oxygen of the ester group and not the ether oxygen.

Original languageEnglish
Pages (from-to)2277-2283
Number of pages7
JournalInorganica Chimica Acta
Volume360
Issue number7
DOIs
Publication statusPublished - 2 May 2007
Externally publishedYes

Keywords

  • Crystal structure
  • Cyclic voltammetry
  • Titanocene
  • β-diketonates

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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