Threshold Energies for the Reactions OH- + CH3X yields CH30H + X- (X = Cl, Br)Measured By Tandem Mass Spectrometry: Deprotonation Energies (acidities) of CH3Cl and CH3Br

摘要

In a tandem mass spectrometer, a beam of OH-ions was reacted with methyl chlorideand methyl bromide at collision energies in the range 0.2 < ET < 5eV. For both of the methyl halides, excitation functions, sigma (ET), were measured for the two competing channels, endoergic proton transfer and exoergic nucleophilic