Table 2.

Activation parameters and KIE values for the reactivity of 1^*

Substrate	ΔH†,‡	ΔS‡	ΔG†,‡, §	E a †	A (105)¶	k H /k D
DHA	5(1)	−49(4)	19(2)	5.6(3)	0.004	6.8
Xanthene	5.9(6)	−43(3)	18(1)	6.5(6)	0.0672	22.3
Fluorene	11.5(2.0)	−19(7)	17(4)	12.0(2)	12,860	82.6

^*In DMSO.

^†Kilocalories per mole.

^‡ Entropy unit.

^§ 20 ^οC.

^¶ Second⁻¹.