Table 1.

Rate Constants, Eyring and Arrhenius Parameters for H- and D-Atom Transfer Reactions.^a

Reaction	k (M−1 s−1)	ΔH‡b	ΔS‡c	Eab	log A
RuIIimH + TEMPO•	(1.4 ± 0.1) × 103	2.7 ± 0.5	−35 ± 4	3.3 ± 0.5	5.6 ± 0.3
RuIIimD + TEMPO•	60 ± 7	4.6 ± 0.6	−35 ± 5	5.2 ± 0.6	5.6 ± 0.4
RuIIimH + TEMPO• (calc)d	(4.3 ± 0.6) × 104	2.9 ± 0.4	−28 ± 2	3.5 ± 0.4	7.0 ± 0.2
RuIIimD + TEMPO• (calc)d	(8.4 ± 1.1) × 103	3.6 ± 0.5	−28 ± 3	4.2 ± 0.5	7.0 ± 0.3
RuIIimH + RuIIIim	(3.2 ± 0.3) × 105	4.7 ± 0.2	−17.4 ± 0.4	5.3 ± 0.2	9.4 ± 0.2
RuIIimD + RuIIIim	(2.1 ± 0.2) × 105	5.7 ± 0.3	−15.3 ± 0.5	6.3 ± 0.2	9.9 ± 0.2
TEMPO• + TEMPO-He	4.7 ± 1.0	3.8 ± 0.4	−43 ± 2	4.4 ± 0.4	3.8 ± 0.2
TEMPO• + TEMPO-De	0.20 ± 0.04	5.1 ± 0.4	−44 ± 2	5.7 ± 0.4	3.5 ± 0.2

^aIn MeCN at 298 K.

^bkcal mol⁻¹.

^ccal mol K⁻¹.

^dCalculated from the Marcus cross relation.

^eRefs. ¹⁸ and ³².