How does the n5 scissors vibrational mode influence the dissociative photoionization of methyl iodide (CH3I)?

Label:chem

Topic
The study reveals that the n5 scissors vibrational mode of the methyl group promotes access to the conical intersection, facilitating the transfer of population from the first excited state to the ground cationic state.

From: "Evidencing an elusive conical intersection in the dissociative photoionization of methyl iodide", Chemical Science, Volume 15, Issue 9, 28 February 2024, Pages 3203-3213
Answer
The n5 scissors vibrational mode promotes the access to the conical intersection, which facilitates the internal conversion process and leads to the formation of methyl ions (CH3+).
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