Haber-Weiss redox cycle

At low temperature, decomposition of a hydroperoxide initiator may require promotion. Transition-metal ions such as Fe2+, Co2+, Ag+, etc., that can easily switch valence states can serve this purpose. A likely mechanism of such promotion by an ion Me2+ is the Haber-Weiss redox cycle [2] ... 

The formation of the hydroperoxide is believed to proceed with a chain mechanism much like 9.44 (R - being C6HU -), except that its product acts as initiator. Cobalt functions to control the conversion of the hydroperoxide to free radicals for initiation [67], in all likelihood by a Haber-Weiss redox cycle 9.4 (see Section 9.2). 

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See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ , ]

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