Kinetics and mechanism of the chromic oxidation of myo-inositol

Autor: Mabel Santoro, László Korecz, Evangelina Caffaratti, Antal Rockenbauer, Juan M. Salas-Peregrín, Sandra Signorella, Luis F. Sala
Rok vydání: 2007
Předmět:
Zdroj: Polyhedron. 26:169-177
ISSN: 0277-5387
DOI: 10.1016/j.poly.2006.08.003
Popis: The oxidation of d -myo-inositol (Myo) by CrVI yields the inosose and Cr3+ as final products when an excess of cyclitol over CrVI is used. The redox reaction takes place through the combination of CrVI → CrIV → CrII and CrVI → CrIV → CrIII pathways. Intermediacy of CrIV was evidenced by the detection of CrO 2 2 + , formed by reaction of CrII with O2. The EPR spectra show that five- and six-coordinated oxo-CrV intermediates are formed, with the cyclitol acting as bidentate ligand. Penta-coordinated oxo-CrV species are present at any [H+], whereas hexa-coordinated ones are only observed at pH
Databáze: OpenAIRE