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Home All issues Volume 645 (January 2021) A&A, 645 (2021) A53 Full HTML
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Table B.1

Branching ratios of radical addition reactions.

Reacting species Produced species BR Ea
(%) (K)
s-CH3 (a) + s-CH3 →  s-C2H6 100 0
s-CH3 + s-C2H3 →  s-C3H6 100 0
→  s-CH4 + s-C2H2 0 0
s-CH3 + s-C2H5 →  s-C3H8 100 0
→  s-CH4 + s-C2H4 0 0
s-CH3 + s-HCO →  s-CH3CHO 30 0
→  s-CH4 + s-CO 70 0
s-CH3 + s-CH3O →  s-CH3OCH3 50 0
→  s-CH4 + s-H2CO 50 0
s-CH3 + s-CH2OH →  s-C2H5OH 30 0
→  s-CH4 + s-H2CO 70 0
s-HCO + s-C2H3 →  s-C2H3CHO 10 0
→  s-C2H4 + s-CO 90 0
→  s-C2H2 + s-H2CO 0 0
s-HCO + s-C2H5 →  s-C2H5CHO 10 0
→  s-C2H6 + s-CO 90 0
→  s-C2H4 + s-H2CO 0 0
s-HCO + s-HCO →  s-HC(O)CHO 5 0
→  s-CO + s-H2CO 95 0
s-HCO + s-CH3O →  s-CH3OCHO 50 0
→  s-CO + s-CH3OH 50 0
→  s-H2CO + s-H2CO 0 0
s-HCO + s-H2CO →  s-CH2(OH)CHO 5 0
→  s-CO + s-CH3OH 95 0
→  s-H2CO + s-H2CO 0 0
s-CH3O + s-CH3O →  s-CH3OOCH3 50 0
→  s-CH3OH + s-H2CO 50 0
s-CH3O + s-CH2OH →  s-CH3OCH2OH 50 0
→ s-CH3OH + s-H2CO 50 0
s-CH2 OH + s-CH2 OH → s-(CH2OH)2 50 0
→ s-CH3OH + s-H2CO 50 0
s-O + s-C2 H6 → s-C2H5OH 50 2400
→ s-H2O + s-C2H4 50 2400
s-O + s-C3 H8 → s-C3H7OH(b) 20 1000
→ s-H2O + s-C3H6 80 1000
s-CH3 O + s-C2 H5 → s-C2H5OCH3 20 0
→ s-C3OH + s-C2H4 20 0
→ s-H2CO + s-C2H6 60 0
s-CH3 + s-CH3 OCH2 → s-C2H5OCH3 100 0

Notes. (a) The prefix “s-” means the species is in the solid phase, which corresponds to the ice surface and the ice mantle. (b) s-C3H7OH accounts for all the isomers.

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