Oxyl radical configurations

TABLE 13. Ease of Oxyl Radical H Abstraction vs. Addition for Different Double Bond Configurations. Data from (279). 

Me and Ph are donors of electrons during addition the resonance effect prevails over polar one. Benzoyl-oxyl is an electron-acceptor radical the addition step is controlled merely by the polar effect [128]. During the addition of monomers to trimethylmethoxyl, both polar and resonance properties of their electron configuration are involved. 

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