Trajectories for the reaction of 9MG^•+ + CH₃NH₂ simulated at E_CM = 0.05 eV, showing (A) methyl-H abstraction, (B) amine-H abstraction, (C) N-terminal addition of CH₃NH₂ to C2 in 9MG^•+, and (D) N-terminal addition of CH₃NH₂ to C8 in 9MG^•+. Each top frame depicts changes of potential energy (left axis) and center-of-mass reactant/product separation (right axis), while the bottom frame shows reactive bond lengths throughout the trajectory. Inset snapshots illustrate product structures, with the abstracting H highlighted in yellow.