Reactivity and structure of NO+2 produced by the N+3+O2 reaction

Publisher Website
Google Scholar
Abstract
The experiments have been performed with a time‐resolved atmospheric pressure ionization mass spectrometer (TRAPI). The NO+2 ion produced by the reaction of N+3 with O2 was found to decay to NO+ by a unimolecular thermal decomposition reaction having a rate constant represented by 5.6×107 exp(−4500/RT) s−1. NO+2 was also found to react rapidly with C2H6 (k=8.7×10−10 cm3 s−1), although ONO+ being produced by the charge exchange between O+2 and NO2 (nitrogen dioxide) showed undetectable reactivity (k−12 cm3 s−1) at the same experimental conditions. It is concluded from the present results that NO+2 has not the usual structure of ONO+ but has a structure of NOO+. The initial product ion ratio of NO+2/NO+ in the N+3+O2 reaction was measured to be 1.72±0.2 at 303 K.