Elucidating the reaction kernel and probing the effect of anharmonicity in the ring-closing reaction of fulgide single crystals.

ABSTRACT: Chemistry involves dynamics that transform chemical structures from one form to another. However, among the vast milieu of quantum vibrations in a molecule, it boils down to a few key motions that drive the system across the transition state. It is the anharmonicity at the transition state or barrier-crossing region that couples normal modes, leading to localized motions and reduced dimensionality. The interplay of strongly anharmonic local modes collectively drives the system across the barrier-crossing region, forming a photoproduct. Ultrafast broadband transient absorption spectroscopy has revealed the effect of reduced dimensionality in a prototypical ring-closing reaction in fulgide single crystals. The relatively large anharmonicity at the reactive crossing and the strong reaction fo

SUBMITTER: Mitra S 

PROVIDER: S-EPMC12499270 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature