Collision-Induced Dissociation of Fe2+

Article abstract of DOI:10.1021/j100325a001

In this paper, we present collision-induced-dissociation (CID) studies of gas-phase Fe2⁺.Experiments were performed on a new guided ion beam mass spectrometer designed to produce cold, mass-selected ions.The energy dependence of the cross section for CID with Xe is presented.Interpretation of the cross-section treshold is consistent with theoretical models and gives Ddeg (Fe2⁺) = 2.72 +/- 0.07 eV.Combined with the known ionization potentials and electron affinities of Fe and Fe2, this bond energy also provides Ddeg (Fe2) = 1.15 +/- 0.09 eV and Ddeg (Fe2^-) = 1.90 +/- 0.09 eV.These dimers are discussed with regard to previous work and their respective bonding schemes.