Journal
FARADAY DISCUSSIONS
Volume 133, Issue -, Pages 137-156Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b600721j
Keywords
-
Categories
Ask authors/readers for more resources
Despite the success of the CRESU (Cinetique de Reaction en Ecoulement Supersonique Uniforme) method in measuring rate coefficients for neutral - neutral reactions of radicals down close to the very low temperatures prevalent in dense interstellar clouds (ISCs), there are still many reactions of potential importance in the chemistry of these objects for which there have been no measurements of low temperature rate coefficients. One important class of reactions is that between atomic and molecular free radicals and unsaturated hydrocarbons; that is, alkynes and alkenes. Based on semi-empirical arguments and correlations of 'room temperature'rate coefficients, k(298 K), for reactions of this type with the difference between the ionisation energy of the alkyne/alkene and the electron affinity of the radical, we suggest which reactions between the radicals, C(P-3), O(P-3), N(S-4), CH, C2H and CN, and carbon chain molecules (C-n) and cyanopolyynes (HC2nCN and NCC2nCN) are likely to be fast at the temperature of dense ISCs. These reactions and rate coefficients have been incorporated into a purely gas-phase model (osu2005) of ISC chemistry. The results of these calculations are presented and discussed.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available