Below, the enthalpies of reaction at 0 K and the high-pressure limit fitted rate expressions (valid between 200 K and 3000 K) are reported for each of the reactions studied in this work. We expect these expressions to prove useful in future modeling studies. The sizedependent trends of the radical combinations are affected by both steric and electronic phenomena, and these considerations can be implemented heuristically in estimate the rates of radical combinations for larger species. With these considerations in mind, the reported rate expressions should be useful in rule-based extrapolations to larger molecules (e.g., geometric mean rule), especially in the high pressure limit.