Crystal structures of chloro(trimethylphosphine) gold(I), chloro(tri-ipropylphosphine)gold(I) and bis(trimethylphosphine) gold(I) chloride

Klaus Angermaier, Edgar Zeller, Hubert Schmidbaur

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126 Scopus citations

Abstract

The crystal structures of chloro(trimethylphosphine)gold(I), chloro(tri-ipropylphosphine)gold(I) and bis(trimethylphosphine)gold(I) chloride · 2CHCl3 have been determined by single crystal X-ray diffraction studies. The monomeric units of the molecular complexes (Me3P)AuCl (1) and (iPr3P)AuCl (2) have linear PAuCl axes. However, the monomers of (Me3P)AuCl are aggregated to form a helical chain through fairly short alternating Au ⋯ Au contacts of 327.1(1), 335.6(1), and 338.6(1) pm and AuAuAu angles of 141.6(1), 141.8(1) and 141.9(1)°. By contrast, the monomers of compound 2 show no such Au ⋯ Au contacts in the lattice. This distinction between the two structures of the two analogous species is attributed to the different steric requirements of the phosphines. The crystals of bis(trimethylphosphine)gold (I) chloride (3)·2CHCl3 consist of layers of (Me3P)2AuCl complexes separated by layers of solvent molecules. The PAuP coordination is almost linear, with a chlorine atom at right angles (AuCl = 316.7(1) pm, ClAuP = 92.3(1)°).

Original languageEnglish
Pages (from-to)371-376
Number of pages6
JournalJournal of Organometallic Chemistry
Volume472
Issue number1-2
DOIs
StatePublished - 14 Jun 1994
Externally publishedYes

Keywords

  • Chloride
  • Crystal structure
  • Gold
  • Phosphine

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