Table 1.

Observed rate constants obtained from the fitted data in Figure 1.^[a]

E, S[b]	2H species	kobs1 [s−1)]	kobs2 [s−1]	fA1[c]
H,H	–	236.1±11.9	4.0±1.1	0.94
H,D	[D4]EA	87.2±3.6	5.1±0.2	0.70
D,H	[D2]EAL	191.9±5.2	5.7±1.4	0.93
D,D	[D2]EAL, [D4]EA	48.2±4.4	6.1±3.8	0.88

^[a]Averaged transients are presented in Figure 1. Individual transients (typically ca. 10) were each fitted to a double exponential function with the averages ±1 standard deviation of rate constants presented here.

^[b]The deuteration state of the 5′-deoxyadenosyl Cβ (E) and the substrate (S).

^[c]The relative fraction of the amplitude of k_obs1, that is, A₁/(A₁+A₂).