Table 2.

Self-Exchange and Pseudo Self-Exchange HAT Rate Constants and Deuterium Kinetic Isotope Effects for Transition Metal Coordination Complexes.^a

Reaction	ΔG° b	kH (M−1 s−1) per H•	kH/kD	Reference
RuIIimH+ RuIIIimc	0	(3.2 ± 0.3) ×105	1.5 ± 0.2	this work
[FeII(H2bim)3]2+ + [FeIII(H2bim)2(Hbim)]2+c	0	(9.7 ± 0.1) ×102	2.4 ± 0.3d	47
[FeII(H2bip)3]2+ + [FeIII(H2bip)2(Hbip)]2+c	0	(1.8± 0.3) ×103	1.6± 0.5	48
[RuIII(bpy)2(py)(OH)]2+ + [RuIV(bpy)2(py)O]2+e	0	(7.6 ± 0.4) ×104	1.2 ± 0.1	21a
[RuII(bpy)2(py)(OH2)] 2+ + [RuIV(bpy)2(py)O]2+e	−2.5	(1.09± 0.02) × 105	16.1 ± 0.2	44
[RuII(tpy)(bpy)(OH2)]2+ + [RuIV(tpy)(bpy)O]2+e,f	−2.5	(7.45 ± 0.55) × 105	11.4 ± 1.3	56
[RuII(bpy)2(py)(OH2)]2+ + [RuIII(tpy)(bpy)(OH)]2+e	−1.3	(2.1 ± 0.1) ×105	5.8 ± 0.4	44
TpCl2OsIII(NH2Ph) + TpCl2OsIV(NHPh)c,g	0	(1.5 ± 1.0) ×10−3	ND	22
[VIV(4,4′-Me2bpy)2(O)(OH)]+ + [VV(4,4′-tBu2bpy)2(O)2]+c	~0	(6.5 ± 0.5) ×10−3	ND	21b

^aAt 298 K.

^bkcal mol⁻¹.

^cIn MeCN.

^dAt 324 K.

^eIn H₂O/D₂O; tpy = 2,2′:6′,2″-terpyridine.

^fOther analogous Ru(H₂O)/Ru(O) reactions, not shown in Table 2, have k_H = 2.1 × 10⁵ to 1.5 × 10⁶ M⁻¹ s⁻¹ per H^• and k_H/k_D = 9.8–12.3 at 298 K.⁵⁶

^gTp = hydrotris(pyrazolyl)borate.