Resonant two-photon mass-analyzed threshold ionization of 2,5-difluoroaniline

- We report the vibronic and cation spectra of 2,5-difluoroaniline.
- The excitation and ionization energies are found to be 34 451 and 65 205 cm−1.
- The bands result from substituent-sensitive bending and in-plane ring modes.