Table 9. Recommended Rate Constants for H-Atom Abstraction from Alkenes on a Per H-Atom Basis^a,b.

class	A	n	Ea	uncertainty bounds (upper, lower)
primary	4.69 × 1004	2.68	6959	1.42, 1.35
primary allylic: 1-alkenes	9.14 × 1002	3.06	3582	1.10, 1.28
primary allylic: 2-alkenes	1.32 × 1003	3.08	3203	1.19, 1.50
primary vinylic	2.72 × 1005	2.54	12819	2.39, 2.95
secondary	4.08 × 1005	2.44	4734
secondary allylic	1.06 × 1005	2.59	2654	1.67, 2.67
secondary vinylic	2.41 × 1005	2.55	9611	2.09, 2.02
tertiary allylic	2.10 × 1006	2.19	2329

^acm³ mol^–1 s^–1 cal^–1 units.

^b(ATⁿ = cm³ mol^–1 s^–1, energies = cal mol^–1). Fit between 300 and 2000 K.