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Enolization of acetone in superheated water detected via radical formation
Khashayar Ghandi1, Brenda Addison-Jones, Jean-Claude Brodovitch
1Department of Chemistry and TRIUMF, Simon Fraser University, 8888 University Drive, Burnaby, BC, Canada V5A 1S6.
Abstract:
Muoniated free radicals have been detected in muon-irradiated aqueous solutions of acetone at high temperatures and pressures. At temperatures below 250 degrees C, the radical product is consistent with muonium addition to the keto form of acetone. However, at higher temperatures, a different radical was detected, which is attributed to muonium addition to the enol form. Muon hyperfine coupling constants have been determined for both radicals over a wide range of temperatures, significantly extending the range of conditions under which these radicals and the keto-enol equilibrium have been studied.
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