Abstract

The selective IR multiphoton decomposition of 12CF 3I in the presence of NO 2 as radical scavenger was used to obtain isotopic enrichment of 13C in a one- stage process. The 12CF 3 radicals produced by IR photolysis react with NO 2 through a fast bimolecular reaction to yield 12CF 2O together with undissociated 13CF 3I as the main carbon-containing products. The isotopic enrichment increases with the [NO 2]/[CF 3I] ratio. The results are compared with those obtained using O 2 as scavenger.

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