Catalytic oxidations using cobalt(II) complexes - Advances in Catalytic Activation of Dioxygen by Metal Complexes - page 288

The kinetics of the catalytic oxidation has been studied by a volumetric
technique at constant pressure. The observed kinetic behavior was consistent
with the reaction mechanism (14) - (20), where represent the

moiety, respectively.

The rate law corresponding to the proposed mechanism can be derived
by assuming that steps (14) and (15) are reversible and step (16) is rate-
determining. Disproportionation (17) can be regarded as fast 9 , consequently,
the concentration of is negligible. As the kinetics were determined
from initial rates and the formation of Ald is delayed relative to that of StQ,
steps (19) and (20) can be disregarded and the concentration of CoOOR - is
also negligible. These considerations lead to rate equation (21), which is
consistent with the kinetic behavior.