Effect of reagent rotation on the integral cross-sections and isotopic branching of the reactions H− + HD and D− + HD

A quasi-classical trajectory (QCT) method has been used to calculate integral reaction cross-section for H− + HD and D− + HD. The influence of rotation of the reagent on the integral reaction cross-section and the product branching ratios of the title reactions are discussed. The results indicate that the reactive cross-section of H(D)− + HD → HH(D) + D− decreases with an increase of the j for Etran ⩽ 1.5 eV. The results also show that the reactive cross-section of D(H)− + HD → DD(H) + H− decreases with an increase of the j for Etran ⩽ 1.0 eV and that the integral cross-sections of title reactions are sensitive to the reagent rotation.