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Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064

Abstract

PEZZA, Helena Redigolo; LOPES, Cristiane F. Fernandes; SUAREZ-IHA, Maria Encarnación V.  and  COICHEV, Nina. Kinetic and mechanism of S(IV) autoxidation reaction catalysed by transition metal ions. Quím. Nova [online]. 1999, vol.22, n.4, pp.529-540. ISSN 0100-4042.  http://dx.doi.org/10.1590/S0100-40421999000400012.

The oxidation process of sulfur (IV) species (SO2, HSO3- e SO32-) by oxygen, catalysed by trace metal ion and complexes, can play an important role in atmospheric, analytical and bioinorganic chemistry. An overview of the most important reactions in these fields is presented. A fascinating redox cycling of the metal ions and complexes during such autoxidation process was revealed by the combination of kinetics and coordination chemistry studies.

Keywords : sulfite; catalysed autoxidation; transition metal ions.

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