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À propos de : Isotope Effects in Isotope-Exchange Reactions: Evidence for a Large 12C/13C KineticIsotope Effect in the Gas Phase        

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  • Isotope Effects in Isotope-Exchange Reactions: Evidence for a Large 12C/13C KineticIsotope Effect in the Gas Phase
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  • The O-exchange reaction between CO2+ and CO is triggered by two different entrance channels in 13C-labeled systems. The unimolecular dissociation of the C13CO3+ reactive intermediate is investigated at varyingenergies by mass spectrometric techniques. An almost “one-way” O-exchange at energies close to thedissociation threshold discloses a remarkably large intramolecular 12C/13C kinetic isotope effect ranging from6.0 to 7.3 ± 0.5.
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