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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
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Direct three-body atom recombination: Halogen atoms
Rian Koots1, Grace Ding1, Jesús Pérez-Ríos1
1Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11790, USA.
The Journal of Chemical Physics
|July 8, 2025
Summary
Direct three-body recombination is essential for halogen atom reactions. This study demonstrates its importance in understanding halogen recombination, aligning with experimental data for bromide and iodine.
Area of Science:
- Chemical Physics
- Physical Chemistry
- Atomic and Molecular Physics
Background:
- The recombination of halogen atoms is a long-standing research area in chemical physics.
- Current theoretical models rely on a two-step mechanism involving unstable intermediate complexes.
- These models have limitations in fully explaining the dynamics of atom recombination.
Purpose of the Study:
- To investigate the role of direct three-body recombination in halogen atom reactions.
- To explore the mechanism X + X + M → X2 + M, where X is a halogen atom and M is a rare gas atom.
- To provide a more complete theoretical understanding of halogen recombination.
Main Methods:
- Theoretical consideration of the direct three-body recombination pathway.
- Comparison of theoretical predictions with experimental measurements of bromide and iodine recombination.
Main Results:
- The direct three-body recombination mechanism significantly contributes to halogen recombination reactions.
- Theoretical results based on this mechanism show strong agreement with experimental data for bromide and iodine.
- This finding challenges the exclusive reliance on two-step mechanisms.
Conclusions:
- Direct three-body recombination is a crucial pathway in halogen recombination.
- The inclusion of this mechanism enhances the accuracy of theoretical models for halogen recombination.
- This work provides a more comprehensive understanding of halogen atom recombination dynamics.
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