Metalhydroperoxide complex formation is also thought to account for the very sudden
conversion of catalyst into inhibitor upon steadily increasing the metal concentration.[14]
In apolar media, metal salts will form a complex with a hydroperoxide as long as the
hydroperoxide is available. Metal ions that are not coordinated can participate in the
inhibiting reaction 12 in scheme 1.1, and thus sudden inhibition of autoxidation occurs if
the metal concentration becomes higher than the hydroperoxide concentration