The fundamental band ν2 of D213CO

Lohilahti, Jarmo; Kainu, Toni A.; Horneman, V.‐M.

doi:10.1016/j.jms.2005.07.010

Cited by 6 publications

(1 citation statement)

References 24 publications

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“…In irradiated CD 3 OD-13 CO ices, D 2 CO and D 2 13 CO were observed at 1678 cm À1 (band 2) and 1655 cm À1 (band 2 0 ), respectively, matching well with the band at 1676 cm À1 in irradiated CD 3 OD ice, and the literature value for the isotope shi of D 2 13 CO (71 cm À1 ) is close to the observed value of 76 cm À1 . 68 Similarly, two isotopomers of methyl formate were also observed in the isotopically mixed ices of methanolcarbon monoxide. Here, HCO and H 13 CO of methyl formate in the irradiated 13 CH 3 OH-CO ice were detected at 1710 cm À1 (band 3 0 ) and 1678 cm À1 (band 3), which are close to the observed values of methyl formate in CH 3 OH (1714 cm À1 ) OH-CO and CH 3 OH-C 18 O ices, HC 18 O units of methyl formate isotopomers were observed at 1680 cm À1 (band 3) and 1684 cm À1 (band 3 0 ), respectively and the HCO carbonyl unit was observed at 1714 cm À1 (band 3 0 ) and 1716 cm À1 (band 3), respectively.…”

Section: Paper Faraday Discussionmentioning

confidence: 88%

Infrared and reflectron time-of-flight mass spectroscopic study on the synthesis of glycolaldehyde in methanol (CH₃OH) and methanol–carbon monoxide (CH₃OH–CO) ices exposed to ionization radiation

2014

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We present conclusive evidence on the formation of glycolaldehyde (HOCH2CHO) synthesized within astrophysically relevant ices of methanol (CH3OH) and methanol-carbon monoxide (CH3OH-CO) upon exposure to ionizing radiation at 5.5 K. The radiation induced chemical processes of the ices were monitored on line and in situ via infrared spectroscopy which was complimented by temperature programmed desorption studies post irradiation, utilizing highly sensitive reflectron time-of-flight mass spectrometry coupled with single photon fragment free photoionization (ReTOF-PI) at 10.49 eV. Specifically, glycolaldehyde was observed via the v14 band and further enhanced with the associated frequency shifts of the carbonyl stretching mode observed in irradiated isotopologue ice mixtures. Furthermore, experiments conducted with mixed isotopic ices of methanol-carbon monoxide (13CH3OH-CO, CH3(18)OH-CO, CD3OD-13CO and CH3OH-C18O) provide solid evidence of at least three competing reaction pathways involved in the formation of glycolaldehyde via non-equilibrium chemistry, which were identified as follows: (i) radical-radical recombination of HCO and CH2OH formed via decomposition of methanol--the "two methanol pathway"; (ii) via the reaction of one methanol unit (CH2OH from the decomposition of CH3OH) with one carbon monoxide unit (HCO from the hydrogenation of CO)--the "one methanol, one carbon monoxide pathway"; and (iii) formation via hydrogenation of carbon monoxide resulting in radicals of HCO and CH2OH--the "two carbon monoxide pathway". In addition, temperature programmed desorption studies revealed an increase in the amount of glycolaldehyde formed, suggesting further thermal chemistry of trapped radicals within the ice matrix. Sublimation of glycolaldehyde during the warm up was also monitored via ReTOF-PI and validated via the mutual agreement of the associated isotopic frequency shifts within the infrared band positions and the identical sublimation profiles obtained from the ReTOF spectra and infrared spectroscopy of the corresponding isotopes. In addition, an isomer of glycolaldehyde (ethene-1,2-diol) was tentatively assigned. Confirmation of the identified pathways based on infrared spectroscopy was also obtained from the observed ion signals corresponding to isotopomers of glycolaldehyde. These coupled techniques provide clear, concise evidence of the formation of a complex and astrobiologically important organic, glycolaldehyde, relevant to the icy mantles observed in the interstellar medium.

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Section: Paper Faraday Discussionmentioning

confidence: 88%

Infrared and reflectron time-of-flight mass spectroscopic study on the synthesis of glycolaldehyde in methanol (CH₃OH) and methanol–carbon monoxide (CH₃OH–CO) ices exposed to ionization radiation

2014

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The high resolution FTIR spectrum of the ν2 band of formaldehyde isotopomer H213CO

Tan

Lebron

2011

Journal of Molecular Spectroscopy

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High-resolution FTIR analysis of the anharmonic resonance between the v2= 1 and v3= 1 states of formaldehyde-13C (H213CO)

Tan

2017

Journal of Molecular Spectroscopy

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The fundamental band ν2 of D213CO

Cited by 6 publications

References 24 publications

Infrared and reflectron time-of-flight mass spectroscopic study on the synthesis of glycolaldehyde in methanol (CH₃OH) and methanol–carbon monoxide (CH₃OH–CO) ices exposed to ionization radiation

Infrared and reflectron time-of-flight mass spectroscopic study on the synthesis of glycolaldehyde in methanol (CH₃OH) and methanol–carbon monoxide (CH₃OH–CO) ices exposed to ionization radiation

The high resolution FTIR spectrum of the ν2 band of formaldehyde isotopomer H213CO

High-resolution FTIR analysis of the anharmonic resonance between the v2= 1 and v3= 1 states of formaldehyde-13C (H213CO)

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The fundamental band ν2 of D213CO

Cited by 6 publications

References 24 publications

Infrared and reflectron time-of-flight mass spectroscopic study on the synthesis of glycolaldehyde in methanol (CH3OH) and methanol–carbon monoxide (CH3OH–CO) ices exposed to ionization radiation

Infrared and reflectron time-of-flight mass spectroscopic study on the synthesis of glycolaldehyde in methanol (CH3OH) and methanol–carbon monoxide (CH3OH–CO) ices exposed to ionization radiation

The high resolution FTIR spectrum of the ν2 band of formaldehyde isotopomer H213CO

High-resolution FTIR analysis of the anharmonic resonance between the v2= 1 and v3= 1 states of formaldehyde-13C (H213CO)

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Infrared and reflectron time-of-flight mass spectroscopic study on the synthesis of glycolaldehyde in methanol (CH₃OH) and methanol–carbon monoxide (CH₃OH–CO) ices exposed to ionization radiation

Infrared and reflectron time-of-flight mass spectroscopic study on the synthesis of glycolaldehyde in methanol (CH₃OH) and methanol–carbon monoxide (CH₃OH–CO) ices exposed to ionization radiation