Gold(I) complexes of ketiminophosphanes and -phosphane sulfides

Wolfgang Schneider, Andreas Bauer, Annette Schier, Hubert Schmidbaur

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7 Scopus citations

Abstract

The reactions of chloro(dimethyl sulfide)gold(I) with equivalent quantities of the ketiminophosphane diphenyl(diphenylmethyleneamino)phosphane (la) or its sulfide (laS) lead to high yields of stable, crystalline 1:1 complexes with AuCl units attached to the phosphorus and sulfur atom, respectively. Tris(diphenylmethyleneamino)phosphane (le) gives the related complex (Ph2C=N)3PAuCl with the gold atom also selectively P-bound. Bis(diphenylmethyleneamino)phenylphosphane (Ib) could not be used because of its limited stability. Single-crystal X-ray diffraction studies have shown that there is no auxiliary coordination of the metal center by the imino functions of the ligands. The geometry of the P/ S-Au-Cl moieties deviates only very slightly from linearity. The angle at the sulfur atom in (Ph2C=N)Ph2PSAuCl is very small (94.30(3)°], but despite of the resulting rather open coordination there are no discernible intra- or intermolecular contacts in the lattice. Such contacts are also absent with (Ph2C=N)Ph2PAuCl and (Ph2C=N)3PAuCl owing to the bulk of the ligands. The 1:1 complexes do not react with an excess of (Me2S)AuCl. This finding, and the molecular structures of the 1:1 complexes, show very consistently that both phosphane and sulfide donors are far superior as ligands for gold(I) as compared to ketimine donor molecules.

Original languageEnglish
Pages (from-to)1423-1426
Number of pages4
JournalChemische Berichte
Volume130
Issue number10
DOIs
StatePublished - 1997
Externally publishedYes

Keywords

  • (Ketiminophosphane)gold(I) complexes
  • (ketiminophosphanesulfide)gold(I) complexes
  • Gold
  • Gold(I) complexes
  • Ketiminophosphane sulfides
  • Ketiminophosphanes

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