Abstract
The over‐all reactive process is assumed to follow a two‐step mechanism each characterized by a different kind of interaction: (i) the weak interaction that takes care of the product rotational distribution; and (ii) the strong interaction that governs the product vibrational distribution. If we make this assumption it is possible to couple three‐dimensional classical rotational distributions with collinear quantum mechanical vibrational distributions. This procedure leads to a modified vibrational distribution which is found to be in agreement with experiment.