The correlation of rate coefficients for H-atom abstraction by HO radicals with CH bond dissociation enthalpies

For H‐atom ion reactions by HO radicals it has been shown that If Di is taken as the CH bond dissociation enthalpy at 298 K, then a = 0.323 and D0is obtained from the empirical formula \documentclass{article}\pagestyle{empty}\begin{document}$$ D_0 ^{ - 1} = 1.062 \times 10^{ - 2} + 3.52 \times 10^{ - 6} T $$\end{document} where D0 is in kcal/mol and T is in K. Thisrelationship is valid for T between 200 and 400 K. Finally empiricalrelationships are given to help estimate Di.