In the Fenton reaction, a ferrous catalyst and hydrogen peroxide are used to generate hydroxyl radicals which in turn oxidise organic compounds. The reaction is commonly seen in the treatment of wastewater and operates using the following mechanism:
$$ \begin{align} \ce{Fe^2+ + H2O2 &-> Fe^3+ + ^.OH + OH-}\tag{1}\\ \ce{Fe^3+ + H2O2 &-> Fe^2+ + ^.OOH + H+}\tag{2}\\ \ce{Fe^3+ + ^.OOH &-> Fe^2+ + H+ + O2}\tag{3}\\ \ce{RH + ^.OH &-> H2O + R^{.}}\quad\text{(chain propagation)}\tag{4}\\ \ce{R^. + Fe^3+ &-> R+ + Fe^2+}\tag{5}\\ \ce{R^. + H2O2 &-> ROH + ^.OH}\tag{6} \end{align} $$
In the reactions, hydroperoxyl radicals $(\ce{^.OOH})$ are produced as a byproduct of the reduction of the ferrous catalyst, among other reactions. However, literature regarding the impact of the hydroperoxyl radical on the oxidation of organic compounds is limited, with most papers ignoring the effect of the hydroperoxyl radical completely. So, is the effect of the hydroperoxyl radical significant in the oxidation of organic compounds? Why or why not?