Tentative detection of the C5H radical

Details Tentative detection of the C5H radical Tentative detection of the C5H radical

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...164l...1c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 164, no. 1, Aug. 1986, p. L1-L4.

Astronomy and Astrophysics

Astrophysics

42

Hydrocarbons, Infrared Stars, Radicals, Stellar Composition, Stellar Envelopes, Stellar Spectra, Ground State, Line Spectra, Millimeter Waves, Molecular Chains, Molecular Rotation, Molecular Structure, Spectrum Analysis

Scientific paper

Six line doublets, discovered with the IRAM 30-m telescope in the millimeter-wave spectrum of IRC+10216, have been identified as the J = 31/2-29/2 and J = 35/2-33/2 to 43/2-41/2 rotational transitions of a new radical with a 2Pi ground state. The rotation and distortion constants of this radical are Bo = 2387.01 + or - 0.02 MHz and Do = 50 + or - 20 Hz (2sigma). The new radical is tentatively identified with C5H, for which Bo of about 2375 MHz is estimated from standard bond length considerations. An alternate, although less likely, candidate would be C4N.

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