Dinuclear Gold(I) Chloride Complexes of 1,4-Bis(diphenylphosphinyl)butane and 1,5-Bis(diphenylphosphinyl)pentane: A Conformational Study

H. Schmidbaur, P. Bissinger, J. Lachmann, O. Steigelmann

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

[1,4-Bis(diphenylphosphinyl)butane]digold dichloride 1 and [1,5-bis(diphenylphosphinyl)-pentane]digold dichloride 2 have been prepared from R2SAuCl (R = CH2CH2OH) and the corresponding bidentate phosphines Ph2P(CH2)ηPPh2 (η = 4 or 5) in good yields. The structures of the compounds have been determined by single crystal X-ray diffraction (1·CH2C12: space group P1, Z = 2; 2-0.5 CH2Cl2:space group C2/c, Z = 8). While the monomers [Ph2P(CH2)5PPh2] (AuCl)2 are associated through intermolecular Au…Au contacts (3.323Å) to form a chain-like structure, the crystal lattice of 1·CH2Cl2 features independent [Ph2P(CH2)4PPh2](AuCl)2 molecules which show no intra- or intermolecular Au…Au interactions. This exceptional behaviour can be rationalized on the basis of efficient packing of solvent molecules and molecules 1 with a particularly favourable conformation, which cannot be altered by weak Au(d10)-Au(d10) interactions.

Original languageEnglish
Pages (from-to)1711-1716
Number of pages6
JournalZeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
Volume47
Issue number12
DOIs
StatePublished - 1 Dec 1992
Externally publishedYes

Keywords

  • Auriophilicity
  • Bidentate Phosphines
  • Gold(I) Complexes
  • X-Ray

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