Abstract

The H + HC1 potential surfaces for both reaction channels are calculated by a modified diatomics-in-molecules method including three-center molecular integrals Using the same adjustable parameters as for the FH 2 system, we obtain barrier heights of 5.2 kcal mole (abstraction) and 14.2 kcal mole (exchange). Changing one adjustable parameter only and fitting the experimental difference between the activation energies of the two reaction channels, we obtain 4.9 and 3.9 kcal mole respectively for the abstraction and exchange barrier heights.

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