A Tandem ICR Study of the Reaction of N2 + with SO2

The title reaction is an example of a growing group of reactions which exhibit very strong dependence on ion translational energy and/or internal energy of the reactant species. An extensive investigation of the charge transfer reaction between N₂+ and SO₂ utilizing a flow drift tube has demonstrated that this reaction system has an extremely strong dependence on translational energy [I]. The rate constant reported by Dotan et al. has a miximum value of 7 × 10-10 cc’s per molecule second at thermal energy, declines sharply to a minimum at 0.5 eV and increases at higher energy. Figure 1 illustrates this kinetic energy dependence.