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Gold Nanoparticle Synthesis
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Heavier pnictinidene gold(i) complexes.

Monika Kořenková1, Vít Kremláček, Milan Erben

  • 1Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, CZ - 532, 10, Pardubice, Czech Republic. libor.dostal@upce.cz.

Dalton Transactions (Cambridge, England : 2003)
|October 5, 2018
PubMed
Summary
This summary is machine-generated.

New N,C,N-chelating pnictinidene ligands were synthesized and coordinated with gold(I) complexes. These pnictinidene ligands offer versatile coordination, leading to novel neutral and ionic gold complexes with potential applications in catalysis and materials science.

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Area of Science:

  • Organometallic Chemistry
  • Coordination Chemistry
  • Materials Science

Background:

  • Exploration of novel ligand systems for transition metal complexes.
  • Investigating the coordination behavior of pnictogen elements in organic frameworks.

Purpose of the Study:

  • To synthesize and characterize novel N,C,N-chelating pnictinidene ligands.
  • To explore the coordination chemistry of these ligands with gold(I) complexes.
  • To investigate the structural and bonding properties of the resulting gold complexes.

Main Methods:

  • Synthesis of N,C,N-chelating pnictinidenes (ArE, where E = As, Sb, Bi).
  • Coordination reactions with various gold(I) precursors ([AuCl(Me2S)], [Au(C≡CPh)]4, [Au(IPr)(MeCN)]+[BF4]-).
  • Characterization using NMR, ESI-MS, IR, Raman spectroscopy, and X-ray diffraction.
  • Density Functional Theory (DFT) calculations for structural and bonding analysis.

Main Results:

  • Formation of neutral gold(I) complexes [AuCl(ArE)] with arsenic and antimony pnictinidenes.
  • Instability observed with bismuth pnictinidene, leading to gold metal deposition and ligand oxidation.
  • Synthesis of ionic gold(I) complexes with alkynyl and carbene ligands, featuring pnictinidene coordination.
  • Successful structural elucidation of most complexes via X-ray diffraction.

Conclusions:

  • N,C,N-chelating pnictinidenes are effective ligands for gold(I) coordination.
  • The electronic properties of the pnictogen element influence complex stability and reactivity.
  • The study provides insights into the coordination patterns and bonding in novel gold-pnictinidene complexes.