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Synthesis and Catalytic Performance of Gold Intercalated in the Walls of Mesoporous Silica
Published on: July 9, 2015
Synthesis and structural characterisation of stable cationic gold(I) alkene complexes
Thomas N Hooper1, Michael Green, John E McGrady
1School of Chemistry, University of Bristol, Cantock's Close, Bristol, UK.
Chemical Communications (Cambridge, England)
|August 8, 2009
Summary
Researchers synthesized novel gold(I) complexes with alkenes like norbornene and isobutylene. These stable crystalline compounds, [Au(PBu(t)(3))(alkene)][SbF(6)], were characterized using advanced spectroscopic and crystallographic techniques.
Area of Science:
- Organometallic Chemistry
- Coordination Chemistry
Background:
- Gold(I) complexes are valuable in catalysis and materials science.
- Understanding the coordination behavior of gold(I) with unsaturated hydrocarbons is crucial for developing new synthetic methodologies.
Purpose of the Study:
- To synthesize and characterize novel gold(I)-alkene complexes.
- To investigate the reactivity of a specific gold(I) precursor with various alkenes.
Main Methods:
- Reaction of [AuCl(PBu(t)(3))] with silver hexafluoroantimonate (AgSbF(6)) in dichloromethane.
- Inclusion of alkenes such as norbornene, norbornadiene, trans-cyclooctene, and isobutylene.
- Characterization using Nuclear Magnetic Resonance (NMR) spectroscopy and X-ray crystallography.
Main Results:
- Formation of stable, crystalline gold(I)-alkene complexes with the formula [Au(PBu(t)(3))(alkene)][SbF(6)].
- Successful characterization of the synthesized complexes, confirming their structure and stability.
- Demonstration of the coordination of diverse alkenes, including strained and simple ones, to the gold center.
Conclusions:
- The gold(I) precursor [AuCl(PBu(t)(3))] readily forms stable complexes with a range of alkenes.
- The counterion SbF(6)(-) plays a role in stabilizing these novel organometallic compounds.
- This work expands the scope of known gold(I)-alkene coordination chemistry.
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