Electron‐impact studies—LI: Hydrogen randomization in the stilbene molecular ion

Hydrozen randomization precedes the formation of M+·  H· and M+·  CH3· species from the stilbene molecular ion at 15 eV. The carbon atom involved in the M+·  CH3· elimination originates randomly from the whole molecule. The [M  15] ion (m/e 165) in the spectra of stilbene and 9,10‐dihydrophenanthrene is produced from a common ion.