Reactivities of osmium(VIII), iridium(IV) and platinum(IV) towards glycolaldehyde |
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Authors: | Gupta Kalyan Kali Sen Begum Bilkis Ara Ghosh Sakti Prosad |
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Institution: | (1) Department of Chemistry, Jadavpur University, Calcutta, 700 032, India;(2) Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Calcutta, 700 032, India |
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Abstract: | Oxidations of glycolaldehyde (GA) to glyoxal by osmium(VIII), iridium(IV) and platinum(IV) have been investigated in aqueous
solution, and the orders with respect to each reactant] determined. The reaction involving iridium(IV) takes place through
intermediate formation of free radicals in a MeCO2Na-MeCO2H buffer medium, whereas a one-step two-electron transfer process occurs in the oxidations by OsVIII and PtIV in an alkaline medium. Mechanisms consistent with the experimental findings are proposed.
This revised version was published online in June 2006 with corrections to the Cover Date. |
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