Formation mechanism of glycolaldehyde and ethylene glycol in astrophysical ices from HCO•and•CH2OH recombination: an experimental study | Zendy

Teddy Butscher | Zendy; Fabrice Duvernay | Zendy; P. Theulé | Zendy; Grégoire Danger | Zendy; Yannick Carissan | Zendy; Denis HagebaumReignier | Zendy; T. Chiavassa | Zendy

Open Access

Formation mechanism of glycolaldehyde and ethylene glycol in astrophysical ices from HCO^•and^•CH₂OH recombination: an experimental study

Author(s) -

Teddy Butscher,

Fabrice Duvernay,

P. Theulé,

Grégoire Danger,

Yannick Carissan,

Denis HagebaumReignier,

T. Chiavassa

Publication year - 2015

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/stv1706

Subject(s) - glycolaldehyde , ethylene glycol , astrochemistry , interstellar medium , ethylene , spectroscopy , photochemistry , physics , molecule , infrared spectroscopy , chemistry , astrophysics , organic chemistry , catalysis , astronomy , quantum mechanics , galaxy

International audienceAmong all existing complex organic molecules, glycolaldehyde HOCH2CHO and ethyleneglycol HOCH2CH2OHare two of the largest detected molecules in the interstellar medium.Weinvestigate both experimentally and theoretically the low-temperature reaction pathways leadingto glycolaldehyde and ethylene glycol in interstellar grains. Using infrared spectroscopy,mass spectroscopy and quantum calculations, we investigate formation pathways of glycolaldehydeand ethylene glycol based on HCO• and •CH2OH radical–radical recombinations.We also show that •CH2OH is the main intermediate radical species in the H2CO to CH3OHhydrogenation processes.We then discuss astrophysical implications of the chemical pathwaywe propose on the observed gas-phase ethylene glycol and glycolaldehyde

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