Dissociative Photoionization of Dimethylpyridines and Trimethylpyridine at 266 nm: Dynamics of Methyl Radical Release.

ABSTRACT: The 266 nm photolysis of various positional isomers of dimethylpyridines and trimethylpyridine was investigated by measuring the translational energy distribution of the methyl radical following {sp²}C-C{sp³} bond dissociation. The observed translational energy distribution is attributed to the dissociative photoionization in the cationic ground state following [1 + 1 + 1] three-photon absorption. The translational energy distribution profiles of the methyl radical were broad with the maximum translation energy in excess of 2 eV, which originates due to the dissociation of {sp²}C-C{sp³} bond ortho to the N atom in the ring. The dynamics of {sp²}C-C{sp³} bond dissociation in the cationic ground state of methylpyridines is mar

SUBMITTER: Singh S 

PROVIDER: S-EPMC10882603 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature