NATURE OF THE RADICAL INTERMEDIATES IN THE DECOMPOSITION OF PEROXOVANADIUM SPECIES IN PROTIC AND APROTIC MEDIA

Authors
BONCHIO M CONTE V DIFURIA F MODENA G MORO S EDWARDS JO
Citation
M. Bonchio et al., NATURE OF THE RADICAL INTERMEDIATES IN THE DECOMPOSITION OF PEROXOVANADIUM SPECIES IN PROTIC AND APROTIC MEDIA, Inorganic chemistry, 33(8), 1994, pp. 1631-1637
Citations number
32
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Inorganic chemistry → ACNP
ISSN journal
00201669
Volume
33
Issue
8
Year of publication
1994
Pages
1631 - 1637
Database
ISI
SICI code
0020-1669(1994)33:8<1631:NOTRII>2.0.ZU;2-0
Abstract
The decomposition reaction of peroxovanadium species, either formed in situ by addition of H2O2 to vanadium compounds or added as the isolat ed complex VO(O2) (Pic)(H2O)2 (Pic = picolinic acid anion), has been s tudied both in aqueous acid solutions and in CH3CN. In all cases, evid ence for a radical chain mechanism has been obtained, initiated by the reaction between two molecules of peroxide, either H2O2 or a monopero xovanadate. The occurrence of vanadium and other intermediate with unp aired electrons have been observed by indirect but rather convincing k inetic evidence.