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- W232017189 abstract "The gas-phase CN + propene reaction is investigated using synchrotron photoionization mass spectrometry (SPIMS) over the 9.8–11.5 eV photon energy range. Experiments are conducted at room temperature in 4 Torr of He buffer gas. The CN + propene addition reaction produces two distinct product mass channels, C3H3N and C4H5N, corresponding to CH3 and H elimination, respectively. The CH3 and H elimination channels are measured to have branching fractions of 0.59 ± 0.15 and 0.41 ± 0.10, respectively. The absolute photoionization cross sections between 9.8 and 11.5 eV are measured for the three considered H-elimination coproducts: 1-, 2-, and 3-cyanopropene. Based on fits using the experimentally measured photoionization spectra for the C4H5N mass channel and contrary to the previous study (Int. J. Mass. Spectrom.2009, 280, 113–118), where it was concluded that 3-cyanopropene was not a significant product, the new data suggests 3-cyanopropene is produced in significant quantity along with 1-cyanopropene, with isomer branching fractions from this mass channel of 0.50 ± 0.12 and 0.50 ± 0.24, respectively. However, similarities between the 1-, 2-, and 3-cyanopropene photoionization spectra make an unequivocal assignment difficult based solely on photoionization spectra. The CN + CH2CHCD3 reaction is studied and shows, in addition to the H-elimination product signal, a D-elimination product channel (m/z 69, consistent with CH2CHCD2CN), providing further evidence for the formation of the 3-cyanopropene reaction product." @default.
- W232017189 created "2016-06-24" @default.
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- W232017189 date "2011-10-28" @default.
- W232017189 modified "2023-10-17" @default.
- W232017189 title "Branching Fractions of the CN + C<sub>3</sub>H<sub>6</sub> Reaction Using Synchrotron Photoionization Mass Spectrometry: Evidence for the 3-Cyanopropene Product" @default.
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- W232017189 doi "https://doi.org/10.1021/jp208496r" @default.
- W232017189 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21988568" @default.
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