Evidence for the involvement of CrII and free radicals as intermediates in the reduction of HCrO4- by saccharides, alcohols and hydroxyacid

JUAN CARLOS GONZÁLEZ; SILVIA GARCÍA; NADIA MAMANA; LUIS F. SALA; SANDRA SIGNORELLA

INORGANIC CHEMISTRY COMMUNICATIONS

Elsevier

Lugar: Europa; Año: 2006 vol. 9 p. 437 - 440

1387-7003

Intermediacy of free radicals and Cr II in the reaction of HCrO-4 with a variety of neutral and acid saccharides, hydroxyacids and alyphatic alcohols was demonstrated by the observation of free radical induced polymerization of acrylonitrile and acrylamide, and detection of CrO2 +2 when working in O2-saturated solutions and low HCrO4-. The results are interpreted in terms of a mechanism combining the Cr VI - Cr IV - Cr II and Cr VI - Cr IV - Cr III pathways.