In:
Australian Journal of Chemistry, CSIRO Publishing, Vol. 23, No. 5 ( 1970), p. 921-
Abstract:
The alkaline ferricyanide
oxidations of tartrate and malate ions have been studied in the presence of osmium tetroxide
used as catalyst. The rates are consistent with a mechanism involving as the first step the formation of a 1 : 1 complex of osmium(v111) and the anion of
the organic acid followed by decomposition to intermediate products and the osmium(v1) species with hydroxide ion. The osmium(V1) thus produced is rapidly
oxidized to osmium(V111) with ferricyanide. The kinetic data obtained at higher tartrate concentrations indicate the
formation of an osmium(v111)-(tartrate)2 complex that is resistant to decomposition. The possibility of the formation of
osmium(V1)-organic anion complexes, causing a retarding effect on the reaction velocity during a kinetic run, is also discussed. The oxidation products are
determined and a possible set of reactions for their formation is set out.
Type of Medium:
Online Resource
ISSN:
0004-9425
Language:
English
Publisher:
CSIRO Publishing
Publication Date:
1970
