X-ray crystal structure of the tetra(tert-butyl)erbate anion and attempts to prepare tetravalent organolanthanide complexes

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Abstract

The new [Li(DME)3+] salt of the previously-known tetra(tert-butyl)erbate(III) anion [Er(t-Bu)4-] has been prepared and structurally characterized. The erbium(III) center is ligated by four tert-butyl groups in an approximately tetrahedral arrangement. The C-Er-C angles between the tert-butyl groups range from 108.8(3)° to 111.2(3)° and the Er-C distances range from 2.352(6) to 2.395(6) Å. The lithium cation is surrounded by three DME molecules, which form a distorted octahedral coordination sphere. Attempts to oxidize the analogous terbate complex [Li(DME)3][Tb(t-Bu)4] and its cerium analog to electrically neutral tetra(alkyl)lanthanide(IV) compounds are described.

Original languageEnglish (US)
Pages (from-to)3865-3870
Number of pages6
JournalPolyhedron
Volume26
Issue number14
DOIs
StatePublished - Aug 31 2007

Keywords

  • Crystal structure
  • Erbium
  • Lanthanide
  • Lithium salt
  • Organoerbium
  • Organolanthanide
  • Oxidation
  • Tetravalent
  • tert-Butyl

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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