Abstract
Complexing agents ethylenediaminetetraacetic acid (EDTA), 2,2′-bipyridyl (bpy), and 1,10-phenanthroline (phen) influence the rate of chromic acid oxidation of 2-propanol in aqueous HClO4 solutions. EDTA and bpy catalyse the oxidation rate, whereas phen has no effect, but at higher concentration it acts as an inhibitor. Dependent on conditions, the reactions follow differing order kinetics. In the presence of EDTA and bpy, at the end of the reaction, chromium(III) is present as the EDTA–CrIII and bpy–CrIII complexes. Probable mechanisms are proposed involving a negatively charged termolecular intermediate complex formed from chromic acid, complexing agent, and 2-propanol.
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Khan, Z., Kabir-ud-Din Kinetics and mechanism of ethylenediaminetetraacetic acid-, 2,2′-bipyridyl-, and 1,10-phenanthroline-assisted chromium(VI) oxidation of 2-propanol. Transition Metal Chemistry 27, 832–839 (2002). https://doi.org/10.1023/A:1021382505230
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DOI: https://doi.org/10.1023/A:1021382505230