Effect of ro-vibrational excitation of HCl on the stereodynamics for the reaction of O(3P) + HCl → OH + Cl

► Vibrational excitation plays a considerable role in the stereodynamics of the O(3P) + HCl → OH + Cl reaction. ► OH product is rotationally hot and vibrationally cold. ► The alignment/orientation degree varies with different reagent ro-vibrational state.