Stability of Odd- Versus Even-Electron Gas-Phase (Quasi)Molecular Ions Derived from Pyridine-Substituted N-Heterotriangulenes.

Invited for this month's cover are the collaborating groups at the Friedrich-Alexander University Erlangen-Nürnberg (FAU), Germany and at the Max-Planck-Institut für Kohlenforschung, Germany. The cover picture shows the symbiosis of quantum chemical theory and gas-phase collision experiment investigating the influence of the electronic state on stability of the radical cation ([M]+ . ) and protonated triangulene ([M+H]+ ). The dissociation of the radical cation requires less energy due to the formation of an energetically favored extended aromatic π-system. Read the full text of the article at 10.1002/cplu.201600416.