Hydroxycarbene /HCOH/ and protonated formaldehyde - Two potentially observable interstellar molecules

Details Hydroxycarbene /HCOH/ and protonated formaldehyde - Two potentially observable interstellar molecules Hydroxycarbene /HCOH/ and protonated formaldehyde - Two potentially observable interstellar molecules

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...249..563h&link_type=abstract

Astrophysical Journal, Part 1, vol. 249, Oct. 15, 1981, p. 563-565.

Astronomy and Astrophysics

Astrophysics

7

Carbenes, Formaldehyde, Interstellar Chemistry, Interstellar Matter, Molecular Clouds, Recombination Reactions, Gas Dissociation, Hydroxyl Compounds, Microwave Spectra, Molecular Rotation, Oxygen Atoms

Scientific paper

It is known that the lowest energy isomer of protonated formaldehyde has the proton attached to the oxygen atom, i.e.,
H H \ / \ / C ---O ⊕. / / H
Therefore, a purely statistical argument would suggest that the hydroxycarbene molecule HCOH is twice as likely as formaldehyde to be formed from H3CO + via dissociative recombination, a process generally considered to be very important in interstellar clouds. Theoretical studies show that, while HCOH has never been observed in the laboratory, it should nevertheless be a relatively stable molecule. Theoretical equilibrium structures for H3CO+ and HCOH suggest that they may be observed at 63.5 and 68.4 GHz respectively.

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