Vibration-Vibration Energy Exchange in N2 with O2 and HCl Collision Partners

A rigorous, classical solution of two colliding diatomic molecules is presented. Single quantum vibration‐vibration energy transfer probabilities are calculated for the case of ${\mathrm{N}}_{\text{2*}}+{\mathrm{O}}_2$ and ${\mathrm{N}}_{\text{2*}}+\mathrm{HCl}$ . Results are in excellent agreement with experimental findings. Previous findings on ${\mathrm{N}}_{\text{2*}}+{\mathrm{N}}_2$ and ${\mathrm{N}}_{\text{2*}}+\mathrm{CO}$ reactions are included and it is demonstrated that the energy discrepancy between the respective vibrational states which exchange their energies is not necessarily the measure of the efficiency of the process. Geometry of the collision and the matching of interacting atomic masses seem to be of equal importance.