will denote this carbon as C${}_{\mathrm{F}}$ in the following) are expected to have a larger binding energy than the corresponding levels of the stereocenter C${}^{\star}$. This is due to the higher electronegativity of fluorine compared to bromine, chlorine and hydrogen.\
A scan over a photon energy range from 280 eV to 305 eV was performed, recording the total ion yield and the yield of CF${}^{+}_{3}$ ions. As the features could not unambiguously be assigned to resonant excitations of one of the carbon atoms, the following photon energies were chosen: 286.9 eV (below excitation of the carbon atoms), 299.0 eV (photoionization of the stereocenter only) and 305.0 eV (photoionization of both carbon atoms). For the latter two energies, the coincident measurement of the electron energy allows us to determine the excitation site. The first one was chosen to evaluate the influence of excitation from different halogen shells that have previously been found to play a role in the multiple ionization [@Pitzer2016].\
Confirming our previous work [@Pitzer2016], the electron energy spectra for the fragmentation into four cations do not show any structures. This could be due to the physical processes leading to this fragmentation or due to experimental limitations that do not 