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Related Experiment Videos

Auriferous alkynylselenolatoalkylidynes.

Benjamin J Frogley1, Anthony F Hill1, Chee S Onn1

  • 1Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory ACT 2601, Australia. a.hill@anu.edu.au.

Dalton Transactions (Cambridge, England : 2003)
|July 12, 2019
PubMed
Summary

New tungsten-gold complexes were synthesized by reacting alkynylselenolatoalkylidynes with gold complexes. These heterobimetallic compounds showcase novel coordination chemistry between tungsten and gold.

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Area of Science:

  • Organometallic Chemistry
  • Coordination Chemistry
  • Materials Science

Background:

  • Tungsten-carbon multiple bonds are versatile synthons in organometallic chemistry.
  • Gold(I) complexes are valuable in catalysis and materials science.
  • Alkynylselenolatoalkylidynes offer unique reactivity due to the selenium and alkyne functionalities.

Purpose of the Study:

  • To synthesize novel heterobimetallic tungsten-gold complexes.
  • To explore the coordination behavior of gold(I) with tungsten-carbon multiple bonds.
  • To investigate the functionalization of these complexes.

Main Methods:

  • Reaction of tungsten alkynylselenolatoalkylidynes with gold(I) chloride complexes.
  • Desilylation of a trimethylsilyl-substituted tungsten complex followed by reaction with gold phosphine complexes.

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  • Characterization of the resulting heterobimetallic complexes using spectroscopic techniques.

    • Main Results:

    • Successful synthesis of heterobimetallic [WAu(μ-CSeC≡CR)Cl(CO)2(Tp*)] complexes.
    • Formation of gold alkynyl derivatives [W([triple bond, length as m-dash]CSeC[triple bond, length as m-dash]CAuPR'3)(CO)2(Tp*)] via desilylation and subsequent gold coordination.
    • Demonstration of gold(I) chloride coordination to the tungsten-carbon multiple bond.

    Conclusions:

    • Alkynylselenolatoalkylidynes serve as effective ligands for constructing heterobimetallic tungsten-gold frameworks.
    • The synthetic routes provide access to diverse organometallic structures with potential applications.
    • The study expands the scope of known tungsten-gold coordination compounds.