Dissociative electron attachment to methyl isocyanide

Luxford, Thomas F. M.; Nag, Pamir

doi:10.1140/epjd/s10053-021-00278-2

Cited by 2 publications

(1 citation statement)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A study on the absolute partial ionization cross sections for electron impact of R-carvone from threshold to 100 eV has been reported by Amorim et al [2]. Luxford et al [3,4] presented and discussed the dissociative electron attachment mechanisms to methyl acetonitrile and isocyanide, respectively. New experimental data on the fragmentation of the tyrosine amino acid molecule and the formation of ionised products due to the lowenergy electron impact were presented by Tamuliene et al [5].…”

Section: New Scientific Insightsmentioning

confidence: 99%

Molecular collisions, photoionization and dynamics: honouring Professor Vincent McKoy

et al. 2022

View full text Add to dashboard Cite

The topical issue "Advances on Molecular Collisions, Photoionization and Dynamics" encompasses a set of theoretical and experimental contributions honouring the unprecedented scientific career of our loyal colleague and trusted friend the late Professor Vincent McKoy. He has been a pioneer in implementing ab initio electron-molecule scattering and molecular photoionization theoretical methods, alongside with his collaborations across the globe, having contributed to different research fields that are now well-established and where he leaves a strong scientific legacy as noted by the testimony of his long-lasting collaborator, Carl Winstead. The contributions hereafter are related to the most recent achievements in electron interactions with molecules and molecular ions as a function of phase and stage of aggregation as well as key aspects of photoionization mechanisms therein. Particular topics include studies of photon and electron interactions (excitation, ionization and attachment) with biological, technological, astrophysical and aeronomic relevant molecules, electron transport phenomena and electron induced surface chemistry. Theoretical aspects of model potentials and molecular processes including nonadiabatic chemical reactions are also addressed in this special occasion.

show abstract

Section: New Scientific Insightsmentioning

confidence: 99%

Molecular collisions, photoionization and dynamics: honouring Professor Vincent McKoy

et al. 2022

View full text Add to dashboard Cite

show abstract

Detection and modelling of CH3NC in TMC-1

Tennis

Xue

Talbi

et al. 2023

Monthly Notices of the Royal Astronomical Society

View full text Add to dashboard Cite

Two closely related isomeric pairs of cyanides, CH3[CN/NC] and H2C[CN/NC], are studied in cold, dark interstellar cloud conditions. In contrast to the diverse detections of methyl cyanide (CH3CN) in space, methyl isocyanide (CH3NC) has previously only been observed in warm and hot star-forming regions. We report the detection of CH3NC in the cold pre-stellar core Taurus Molecular Cloud (TMC-1) using the Green Bank Telescope with a detection significance of 13.4σ. Hyperfine transitions in H2CCN and quadrupole interactions in CH3CN and CH3NC were matched to a spectral line survey from the Green Bank Telescope Observations of TMC-1: Hunting for Aromatic Molecules large project on the Green Bank Telescope, resulting in abundances with respect to hydrogen of $1.92^{+0.13}_{-0.07} \times 10^{-9}$ for the cyanomethyl radical (H2CCN), $5.02^{+3.08}_{-2.06} \times 10^{-10}$ for CH3CN, and $2.97^{+2.10}_{-1.37} \times 10^{-11}$ for CH3NC. Efforts to model these molecules with the three-phase gas-grain code nautilus in TMC-1 conditions overproduce both CH3CN and CH3NC, though the ratio of ∼5.9 per cent is consistent across observations and models of these species. This may point to missing destruction routes in the model. The models capture the larger abundance of H2CCN well. Dissociative recombination is found to be the primary production route for these molecules, and reactions with abundant ions are found to be the primary destruction routes. H + CH3NC is investigated with transition state theory as a potential destruction route, but found to be too slow in cold cloud conditions to account for the discrepancy in modelled and observed abundances of CH3NC.

show abstract

Dissociative electron attachment to methyl isocyanide

Cited by 2 publications

References 31 publications

Molecular collisions, photoionization and dynamics: honouring Professor Vincent McKoy

Molecular collisions, photoionization and dynamics: honouring Professor Vincent McKoy

Detection and modelling of CH3NC in TMC-1

Contact Info

Product

Resources

About