Snapshots of the potential energy surface stationary points for the formation of (a) CH₃CN and (b) CH₃NC on the (H₂O)₁₄ ice cluster, where the ^•CN radical is initially hemibonded to the ice. Distances are in Å. Atoms relevant to the reaction are highlighted using a ball-and-stick representation. The atom colour-code is as follows: red for O, blue for N, grey for C, and white for H.