English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The kinetics of reactions of the trifluoromethyl radical (CF 3 ) with several simple cations (Ar + , Xe + , O 2  + , NO + , CO 2  + , C 2 F 5  + ) are studied via the variable electron and neutral density attachment mass spectrometry (VENDAMS) technique. CF 3  is produced via dissociative electron attachment to CF 3 I, resulting in radical concentrations that are smaller than produced using pyrolysis methods, but better quantified. Rate constants and product branching fractions are reported, with typical uncertainties of ∼ 30%. Three of the reactions, Ar + , O 2  + , and C 2 F 5  +  proceed near the calculated collisional rate constant, while the other reactions are between 10% – 30% efficient. The inefficiency of the reactions of Xe +  and CO 2  +  can be explained by the reactions strictly obeying spin-conservation. The reaction of Ar +  yields predominantly (90%) CF 2  +  via dissociative charge transfer, with a minor channel to CF 3  + . The reaction of C 2 F 5  +  yields predominantly CF 3  +  with a second channel (∼ 25%) yielding C 2 F 4  +  and CF 4 , the only example here of a bond-breaking and bond-making reaction. For the other four reactions, only charge transfer to yield CF 3  +  is observed. Rate constants for these same ions with CF 3 I are also reported and found to be rapid with a variety of products formed.

Reaction of the CF 3 Radical with Various Cations (Ar + , Xe + , O 2 + , NO + , CO 2 + , C 2 F 5 + )