Table 2.

Arrhenius parameters extracted from temperature-dependent rate constants

	ln(A)		Ea
Comp.	k1	k−1	k1	k−1	ΔHo	ΔSo
1x	22.0	21.8	14.4	6.44	7.9	1.5
1p	21.2	19.1	4.8	5.40	0.0	−18
2x	20.5	20.8	5.4	12.5	−7.0	−2.6
2p	21.7	19.6	5.8	6.1	0.0	17

E_a and ∆H° values are in kJ mol⁻¹. ∆S° values are in J mol⁻¹⋅K⁻¹. SE: ln(A) ± 0.2, E_a ± 0.5, ∆H° ± 0.4, ∆S° ± 1.5. Arrhenius equation, $\text{k}=\text{A}*\exp \left(-{\text{E}}_{\text{a}}/\text{RT}\right)$. The rate constants for electron transfer are: k₁ (TPA → Ru^III) and k₋₁ (Ru^II → TPA⁺).