Reagent orbital alignment effect in chemiluminescence reactions Ca(¹P₁) + CH₃X (X = Cl, I)

Abstract

Reagent orbital alignment effects in chemiluminescence reactions Ca(¹P₁) + CH₃X (X = Cl, I) are studied in a beam—gas apparatus. Stronger alignment dependence is found in the reaction Ca(¹P₁) + CH₃Cl. For an ideal case, a simple expression is derived to calculate the reagent alignment sensitivity factor. This analysis shows that the primary reasons for the different alignment dependence between Ca(¹P₁) + CH₃Cl and Ca(¹P₁) + CH₃I lie in two facts: one is the larger reaction radius for the latter reaction, and the other is the larger potential splitting V _Π—V _Σ for the former reaction.