Login / Signup

Small Gold(I) and Gold(I)-Silver(I) Clusters by C-Si Auration.

Xiao-Li PeiAna PereiraEkaterina S SmirnovaAntonio M Echavarren
Published in: Chemistry (Weinheim an der Bergstrasse, Germany) (2020)
Auration of o-trimethylsilyl arylphosphines leads to the formation of gold and gold-silver clusters with ortho-metalated phosphines displaying 3c-2e Au-C-M bonds (M=Au/Ag). Hexagold clusters [Au6 L4 ](X)2 are obtained by reaction of (L-TMS)AuCl with AgX, whereas reaction with AgX and Ag2 O leads to gold-silver clusters [Au4 Ag2 L4 ](X)2 . Oxo-trigold(I) species [Au3 O]+ were identified as the intermediates in the formation of the silver-doped clusters. Other [Au5 ], [Au4 Ag], and [Au12 Ag4 ] clusters were also obtained. Clusters containing PAu-Au-AuP structural motif display good catalytic activity in the activation of alkynes under homogeneous conditions.
Keyphrases
  • sensitive detection
  • visible light
  • quantum dots
  • reduced graphene oxide
  • silver nanoparticles
  • gold nanoparticles
  • highly efficient
  • transcranial magnetic stimulation