Diphenyl(2-hydroxy-phenyl)phosphine and its trimethylsilyl ether as ligands for Gold(I) complexes

Christian Hollatz, Annette Schier, Hubert Schmidbaur

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19 Scopus citations


Diphenyl(2-hydroxy-phenyl)phosphine was introduced as a ligand for gold(I) halides and pentafluorophenyl gold(I) in order to probe the interplay of intra-and intermolecular interactions based on aurophilic (Au⋯Au) and hydrogen bonding. 1:1 complexes of the type Ph2(2-HO-C6H4)P-Au-X with X = Cl, Br, C6F5 have been prepared and characterized by analytical and spectroscopic data. The crystal structure of the chloro complex (1) has been determined. In the lattice the molecules form dimers through O-H⋯Cl hydrogen bonds. Au⋯Au contacts are ruled out by steric congestion. Reaction of 1 with triethylamine yields a 1:1 adduct with O-H⋯NEt3 hydrogen bonding. The trimethylsilyl ether of the title ligand also forms 1:1 complexes with AuCl, AuBr, AuI, and AuC6F5. The crystal structures of the chloro (5) and iodo (7) compound have been determined. In both cases the lattices are built from monomers which show only minor differences in their conformations. The silylether groups are not acting as intra-or intermolecular donor functions to the gold atoms.

Original languageEnglish
Pages (from-to)30-37
Number of pages8
JournalZeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
Issue number1
StatePublished - Jan 1999
Externally publishedYes


  • Diphenyl(2-hydroxy-phenyl)phosphine
  • Gold(I) complexes
  • Hydrogen bonding
  • Phosphine ligands
  • Trimethylsilyl ether


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