Abstract
Abstract The formation of negative ions and the negative ion-molecule reaction in nitroethylene by electron impact have been studied. The nondissociative resonance electron capture of the nitroethylene molecule led to the formation of the molecular negative ion. The ionization efficiency curves and the appearance potentials of several fragment negative ions and the molecular negative ion were measured. The dimer negative ion of nitroethylene was found to be formed by the ion-molecule reaction between the molecular negative ion and a neutral nitroethylene molecule, and the rate constant of this ion-molecule reaction was estimated to be approximately 3.2×10−13 cc molecule −1sec−1.
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