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09:35
Preparation of a Corannulene-functionalized Hexahelicene by Copper(I)-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
Published on: September 18, 2016
Gold(I) chloride coordinated 3-hexyne
Jiang Wu1, Peter Kroll, H V Rasika Dias
1Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019, USA.
Inorganic Chemistry
|December 17, 2008
Summary
Researchers synthesized a linear gold(I) complex with a simple alkyne. Density functional theory revealed that sigma donation from the alkyne to gold is stronger than gold to alkyne pi back-donation.
Area of Science:
- Organometallic Chemistry
- Inorganic Chemistry
- Computational Chemistry
Background:
- Gold(I) complexes are valuable in catalysis and materials science.
- Understanding bonding in gold-alkyne interactions is crucial for predicting reactivity.
Purpose of the Study:
- To synthesize and characterize a linear gold(I)-alkyne complex.
- To elucidate the electronic interactions governing the gold-alkyne bond using computational methods.
Main Methods:
- Synthesis of the gold(I) complex using gold(I) chloride (AuCl) and 3-hexyne.
- X-ray crystallography for structural characterization.
- Density functional theory (DFT) calculations for electronic structure analysis.
Main Results:
- A linear gold(I) complex with a simple, unstrained alkyne was successfully synthesized and characterized.
- DFT calculations indicated that sigma donation from the alkyne to gold is the dominant interaction.
- The pi back-donation from gold to the alkyne was found to be less significant.
Conclusions:
- The bonding in this gold(I)-alkyne complex is primarily characterized by strong sigma donation from the alkyne.
- This finding provides insight into the electronic nature of gold-alkyne interactions, relevant for catalyst design.
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