Inorganic Radicals - Free-Radical-Induced DNA Damage and Its Repair - page 89

With alcohols, the SO 4 • − radical reacts by H-abstraction rather than by ET
(Eibenberger et al. 1978). These reactions are rather slow (e.g., with t BuOH k
= 8 10 5 dm 3 mol − 1 s − 1 ; Redpath and Willson 1975; Buxton et al. 1999), and

thus SO 4 • − is considerably more selective than • OH (Gilbert et al. 1999). SO 4 • −
is always generated from S 2 O 8 2 − , and like H 2 O 2 this peroxide readily reacts with
reducing radicals such as derived from primary and secondary alcohols thereby
inducing chain reactions with complex kinetics (Schuchmann and von Sonntag
1988; Ulanski and von Sonntag 1999) but also with those derived from the py-
rimidine nucleobases (Chap. 10.2).

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