Deuterated C3H2 as a clue to deuterium chemistry

Details Deuterated C3H2 as a clue to deuterium chemistry Deuterated C3H2 as a clue to deuterium chemistry

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...173l...1g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 173, no. 1, Feb. 1987, p. L1-L4.

Astronomy and Astrophysics

Astrophysics

27

Abundance, Cyclic Hydrocarbons, Deuterium, Interstellar Chemistry, Molecular Clouds, Astronomical Spectroscopy, Chemical Fractionation, Line Spectra, Molecular Ions

Scientific paper

The authors detected C3HD towards several sources in four rotational lines, at 19, 79, 104 and 107 GHz. The relative integrated intensities of the 212-101 lines of C3HD and C3H2 are found in a ratio 1:5, indicating a high deuterium fractionation ratio for cyclopropenylidene. The detection of the 13C isotope of C3H2 at the same position allows a determination of the optical thickness (≅3) of the line. The detection of such a large enhancement in the deuterated form of C3H2 very strongly suggests that a molecular ion is the chemical precursor of the molecules. A consideration of the amount of the enhancement relative to that in other molecules suggests that the precursor ion is C3H3+.

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