Contrasting Dynamics in Isoelectronic Anions Formed by Electron Attachment.

ABSTRACT: Cyanogen NCCN and cyanoacetylene HCCCN are isoelectronic molecules, and as such, they have many similar properties. We focus on the bond cleavage in these induced by the dissociative electron attachment. In both molecules, resonant electron attachment produces CN^- with very similar energy dependence. We investigate the very different dissociation dynamics, in each of the two molecules, revealed by velocity map imaging of this common fragment. Different dynamics are manifested both in the excess energy partitioning and in the angular distributions of fragments. Based on the comparison with electron energy loss spectra, which provide information about possible parent states of the resonances (both optically allowed and forbidden excited states of the neutral target), we ascribe th

SUBMITTER: Nag P 

PROVIDER: S-EPMC10839900 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature