Related Experiment Video
Updated: Aug 10, 2026

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers
Published on: August 18, 2017
Imaging a reactive resonance in the Cl+CH(4) reaction
1Institute of Atomic and Molecular Sciences (IAMS), Academia Sinica, P. O. Box 23-166, Taipei, Taiwan 106.
This study provides experimental evidence for a previously unsuspected reactive resonance in a chemical reaction. Angular distribution patterns reveal this resonance, offering new insights into reaction dynamics.
Area of Science:
- Chemical dynamics
- Reaction mechanisms
- Quantum mechanics
Background:
- The title reaction has been extensively studied experimentally and theoretically.
- Previous theoretical works hinted at a possible reactive resonance.
Purpose of the Study:
- To present experimental evidence for a reactive resonance in the title reaction.
- To elucidate the nature of this proposed resonance.
Main Methods:
- Analysis of experimental data, specifically angular distributions.
- Investigation of the HCl(nu'=1)+CH(3)(upsilon=0) product pair.
- Plotting angular distributions in the angle-collision energy plane.
Main Results:
- Observed a characteristic pattern in the angular distributions.
- This pattern confirmed the presence of a reactive resonance.
- The resonance was found to be incisive and universal in experimental observables.
Conclusions:
- Experimental evidence strongly suggests a reactive resonance in the title reaction.
- The observed angular distribution patterns are a key indicator of this resonance.
- The nature of the resonance has been elucidated, offering new understanding of the reaction.
Related Concept Videos
¹H NMR: Complex Splitting
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied first.
Carboxylic Acids to Acid Chlorides
Radical Substitution: Halogenation of Alkanes and Alkyl Substituents
In the initiation step of the reaction, the chlorine molecule undergoes homolytic cleavage in the presence of light or heat, forming two highly reactive chlorine radicals. Propagation occurs in two...
Radical Substitution: Allylic Chlorination
[3,3] Sigmatropic Rearrangement of Allyl Vinyl Ethers: Claisen Rearrangement
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...

