State-selected electron capture by molecular ions: collisions of CS₂²⁺and CS₂³⁺with monatomic and diatomic targets

Investigating the gas-phase chemical reactions of molecular dications

“…Initial studies of the bimolecular reactivity of molecular dications were carried out in conventional or adapted multi-sector mass spectrometers. [52][53][54][55][56][57] A beam of the relevant dication was generated by electron-impact ionization of a suitable precursor molecule and subsequent mass selection. The resulting ion beam was then allowed to interact, at high (keV) laboratory kinetic energies, with a neutral target and the fast products derived from the dication were identified and quantified.…”

Bond-forming and electron transfer reactions following collisions of CF22+ with H2X (X = O, S)

“…Reactions following collisions between molecular dications and neutral molecules may be categorised into seven main types. These are non-dissociative electron transfer (6), dissociative electron transfer (7), collision-induced charge separation (8), collision-induced neutral loss (9) and bond forming (10)- (12).…”

“…1,2 The bimolecular reactivity of molecular dications with neutral atoms has been quite extensively studied. The earliest of these investigations were performed at relatively high collision energies (keV) [6][7][8][9][10][11][12][13][14] and found the reactivity to be largely dominated by electron transfer processes. Later, experiments were performed at lower collision energies (eV), 1,[15][16][17] and again revealed that dication reaction pathways are dominated by electron transfer processes.…”

The formation of NO+ from the reaction of N22+ with O2

“…These experiments revealed significant cross sections for electron transfer from the neutral to the dication: [58][59][60][61][62][63][64] CF 2 2+ + Ar → CF 2 + + Ar + , ͑1͒ CF 2 2+ + Xe → CF + + F + Xe + . ͑2͒…”