Categorisation of oxidants as one- or two-equivalent

The use ol sulphite has, however, been called into question recently. According to the scheme all one-equivalent oxidants should produce at least some dithionate (eqns. 4 and 5). However, Veprek-Siska et have found that while sub- 

The following mechanisms for generation of both products were suggested 

The species (MS03) represents an inner-sphere complex between sulphite and the oxidant formed by ligand-displacement. (MS03) is formed by abstracting an electron from 

Reactions (6), (7) and (9) occur with substitution-labile oxidants and (6), (7) and (8) with substitution-inert oxidants. It is postulated that the species (MS03) involves metal-oxygen coordination for labile M , and metal-sulphur coordination for inert M . The latter mode is thought to prevent sulphur-sulphur bond formation. 

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