Table 3. Activation Parameters for the Reaction between the POV-Alkoxide Cluster at Various Oxidation States and the Reductant Dihydrophenazine^a.

cluster	kobs-H(s–1)	kobs-D(s–1)	ΔH‡ (kcal mol–1)	ΔS‡ (cal mol–1 K–1)	ΔG‡ (kcal mol–1)
V6O71–	1.0 × 10–3	5.0 × 10–4	6.5 ± 0.8	–40.9 ± 3.1	18.7 ± 1.7
V6O70	4.0 × 10–3	1.9 × 10–3	7.8 ± 0.8	–31.0 ± 3.3	17.1 ± 1.8

^aValues were obtained from the Eyring plots in Figure 9 for V₆O₇^1– and V₆O₇⁰. ΔG^‡ is reported for a temperature of 298 K.