Gold complexes of ditelluridoimidodiphosphinate ligands - reversible oxidation of Au(I) to Au(III) via insertion of gold into a phosphorus-tellurium bond

Dana J. Eisler, Stuart D. Robertson, Tristram Chivers

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The reaction of (THT) AuCl with (TMEDA)Na[N(TePR2)(2)] (R = Ph, i-Pr, t-Bu) produces a series of gold (III) complexes of the type [{R2PNP(Te)R-2}Au(mu-Te)](2) (4a, R = i-Pr; 4b, R = Ph; 4c, R = t-Bu) rather than the expected homoleptic Au(I) complexes of the ditelluridoimidodiphosphinate ligands. A combination of solution- and solid-state NMR studies shows that both cis and trans isomers of 4a-4c are formed in these reactions. X-ray structural determinations of the trans isomers of 4a-4c reveal a centrosymmetric arrangement with a central four-membered Au2Te2 ring formed by the formal insertion of gold into a P-Te bond; this insertion process was shown to be reversible upon addition of PPh3 to 4a to give the monomeric gold(I) complex Ph3PAu[N{TeP(i-Pr)(2)}(2)]. The X-ray structure of cis-4b is also described.

Original languageEnglish
Pages (from-to)39-46
Number of pages8
JournalCanadian journal of chemistry-Revue canadienne de chimie
Volume87
Issue number1
Early online date11 Jun 2008
DOIs
Publication statusPublished - Jan 2009

Keywords

  • gold
  • tellurium
  • redox
  • X-ray structures
  • imidodiphosphinate
  • single-source-precursors
  • coordination chemistry
  • crystal-structures
  • thin-films
  • deposition
  • HG
  • CD
  • TE
  • ditelluroimidodiphosphinate

Fingerprint Dive into the research topics of 'Gold complexes of ditelluridoimidodiphosphinate ligands - reversible oxidation of Au(I) to Au(III) via insertion of gold into a phosphorus-tellurium bond'. Together they form a unique fingerprint.

  • Cite this