The Temperature Dependence of Reactions of Gaseous IONS: Kinetics and Thermodynamics of Transfer and Association Reactions

The effect of temperature on the kinetics and thermodynamics of gaseous ion-molecule reactions were investigated by pulsed, high pressure (0.4 - 3.0 torr) mass spectrometry in the temperature range 100 - 650OK. In the context of kinetic temperature effects, the reactions investigated may be divided into three classes: (i) Fast bimolecular transfer reactions which proceed with collision rates, e.g. N2H+ + X ---XH+ + N2 (X = CH4, NH3, CH3CHO)