Spectroscopic Characterization of the Product Ions Formed by Electron Ionization of Adamantane.

A structural characterization of the products formed in the dissociative electron ionization of adamantane (C H ) is presented. Molecular structures of product ions are suggested based on multiple-photon dissociation spectroscopy using the Free Electron Laser for Infrared eXperiments (FELIX) in combination with quantum-chemical calculations. Product ions are individually isolated in an ion trap tandem mass spectrometer and their action IR spectra are recorded.