Reactions of Recoil<sup>11</sup>C Atoms with Benzene

Kuipers, P.; Leurs, G. A. J.; Lindner, L.; Briνkman, G. A.

doi:10.1524/ract.1997.77.12.45

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1997

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“…Blaxell and Wolfgang [3] reported the CF 4 + 0 2 system to be an exception, where the primary products were "CO and "C0 2 . Rack et al [15], and Kuipers et al [19] used the 12 C(j\n)"C nuclear transformation for studies of ener-+ RH R-"CH "C hot products ["carbene intermediates] 'C hot products…”

Section: Introductionmentioning

confidence: 99%

Evidence for Insertion Mode Reaction of Energetic Carbon-11 with Oxygen

Lambrecht¹

1997

Radiochimica Acta

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Atomic carbon-11 produced by two different nuclear transformations reacted with 0 2 to yield "CO and "C0 2 . The extent of radiolytic conversion of "CO to "C0 2 contributing to the yield of "C0 2 was established by absorbed dose and irradiation time experiments in gas phase CH 4 + 4.5% 0 2 , c-C 4 F" + 4.5% 0 2 , and ultrahigh purity 0 2 systems. Yield measurements extrapolated to the minimum dose required to assay the "C indicates the insertion mode of reaction of "C with 0 2 in the collision complex gives rise to a 5.6±0.6% absolute yield of "C0 2 . Energetic "C in 3 P electronic state may give rise to both "CO and "C0 2 , while thermalized "C in the 3 P ground state gives rise only to "CO. When a halogen substituent is present on a substrate, then energetic "C ('D, 1 S) can be converted to hot "C ( 3 P) that can then undergo insertion reactions into the π electron system of 0 2 .

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Section: Introductionmentioning

confidence: 99%