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Related Experiment Video

Updated: Jun 5, 2025

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F⁻

Published on: July 27, 2018

Jahn-Teller Effect on CF₃I Photodissociation Dynamics.

Ming Zhang¹, Bowen Dong¹, Xiaoyu Mi¹

¹State Key Laboratory for Mesoscopic Physics and Collaborative Innovation Center of Quantum Matter, School of Physics, Peking University, Beijing 100871, China.

Journal of Chemical Theory and Computation

|December 4, 2024

Summary

This summary is machine-generated.

The Jahn-Teller (JT) effect influences CF3I photodissociation dynamics. This study quantifies JT effect impacts on CF3 fragment rotation, aiding experimental observation beyond classical models.

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Last Updated: Jun 5, 2025

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Area of Science:

Molecular dynamics
Quantum chemistry
Spectroscopy

Background:

The Jahn-Teller (JT) effect is a symmetry-breaking phenomenon in molecular systems.
Understanding JT effect influence on photodissociation is crucial for molecular dynamics studies.

Purpose of the Study:

Investigate the JT effect's impact on CF3I photodissociation dynamics.
Analyze the rotational excitation and coherence of the CF3 fragment.

Main Methods:

Ab initio calculations for potential energy surfaces (3D) of 3Q0+ and 1Q1 states.
Diabatic Hamiltonian model for wavepacket dynamics simulation.
Calculation of CF3 fragment rotational density matrix.

Main Results:

The JT effect significantly influences CF3 fragment rotational excitation.
Partial coherence and specific selection rules are observed in the CF3 fragment rotation.
Detailed analysis of the coupling between electronic and nuclear motion.

Conclusions:

This research provides a theoretical framework for observing and quantifying the JT effect in molecular dissociation.
The findings offer insights into dynamics beyond simplified models.
Opens new avenues for experimental investigations of JT effects in photochemistry.