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Modeling Alkylcopper Decomposition Pathway: Deciphering Pre-Nucleation Processes for Metallic Cu Nanoparticles
Marina Descoubes1, Hélène Gérard1
1Laboratoire De Chimie Théorique (LCT), Sorbonne Université, CNRS, Paris, France.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|July 12, 2026
Summary
This study reveals ethylcopper decomposition pathways, highlighting copper aggregation and autocatalysis in ethane formation. The rate-determining step involves reduction, crucial for understanding pre-nucleation processes.
Area of Science:
- Chemical kinetics
- Organometallic chemistry
- Computational chemistry
Background:
- Ethylcopper compounds are precursors in various chemical processes.
- Understanding their thermal decomposition is key to controlling reaction outcomes.
- Pre-nucleation stages significantly influence material formation.
Purpose of the Study:
- To elucidate the thermal decomposition mechanism of ethylcopper.
- To identify key intermediates and rate-determining steps.
- To investigate the role of copper aggregation and autocatalysis.
Main Methods:
- Density Functional Theory (DFT) calculations.
- Analysis of reaction pathways and activation barriers.
- Comparison with experimental data from literature.
Main Results:
- Identified key pathways involving beta-H elimination and subsequent reduction.
- Found the reduction step to be rate-determining.
- Demonstrated the significant role of copper trimer formation in decomposition.
- Highlighted the autocatalytic effect of Cu(0) atoms.
Conclusions:
- The thermal decomposition of ethylcopper is complex, involving aggregation and autocatalysis.
- DFT calculations provide critical insights into kinetic and thermodynamic aspects.
- Findings contribute to a deeper understanding of pre-nucleation phenomena in organometallic chemistry.
