Preparation and Structure of Poly(gold)telluronium Salts

Klaus Angermaier, Hubert Schmidbaur

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Tris[(triphenylphosphine)gold(I)]telluronium tetrafluoroborate (1) was prepared from the corresponding oxonium salt and bis(t-butyldimethylsilyl)tellurium in dichloromethane at -78°C. The product forms yellow crystals, thermally stable to 125°C. It was identified by standard analytical and spectroscopic techniques, including a single crystal X-ray diffraction study. In the crystal lattice, the cations form tellurium-capped triangles of gold, which are associated into dimers through short intermolecular Au-Au contacts, resembling those in the corresponding sulfur and selenium compounds. - The reaction of (t-BuMe2Si)2Te with four equivalents of [(Ph3P)Au]BF4 in tetrahydrofuran at -78°C gives a tetranuclear compound. ([(Ph3P)Au]4Te)2+ 2 BF4- (2) which differs from 1 in its analytical and spectroscopic data. Its structure could not be determined, but it is assumed that the dications have a square pyramidal geometry.

Original languageEnglish
Pages (from-to)879-882
Number of pages4
JournalZeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
Volume51
Issue number6
DOIs
StatePublished - Jun 1996
Externally publishedYes

Keywords

  • Auriophilicity
  • Crystal Structure
  • Gold(I) Complexes
  • Telluronium Complexes
  • Tri- and Tetra(gold)telluronium Salts

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