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The reaction of O− with N2O has been studied as a function of temperature and O− kinetic energy using ion cyclotron resonance and flowing afterglow techniques. The reaction has a measured rate constant at room temperature of 2.2± 0.4 cm3/sec in the flowing afterglow and 2.5± 0.5 × 10−10cm3/sec in the ICR. As the O− energy is increased the rate constant declines. Over the entire range of energies NO− is the only observed reaction product. Energy exchange between O− and N2O and Ar have also been studied as well as reactions involving the NO− product of the O− reaction with N2O. The present results are compared with previous results.

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