Mass-analyzed threshold ionization spectroscopy of deuterium-substituted isotopomers of o-fluoroaniline and m-fluoroaniline cations

► We report the cation spectra of N-deuterated o-fluoroaniline and m-fluoroaniline. ► Ionization energies of these N-deuterated species differ by a few wavenumbers. ► Relative location of the F atom little effects on the H/D exchange reaction.