Quantum mechanical and quasiclassical Born-Oppenheimer dynamics of the reaction N2X1Σg++O3P→N(4S)+NOX2Πon the N2O a∼3A″ and b∼3A′ surfaces

► Born-Oppenheimer quantum and quasiclassical reaction dynamics. ► Reaction thresholds and vibrational effects. ► Insertion and abstraction mechanisms, with or without reaction intermediates. ► Wavepacket and quasiclassical-trajectory snapshots in real time.