Encyclopedia of Astrobiology

Living Edition
| Editors: Muriel Gargaud, William M. Irvine, Ricardo Amils, Henderson James Cleaves, Daniele Pinti, José Cernicharo Quintanilla, Michel Viso

Propynylidyne (C3H)

  • William M. IrvineEmail author
Living reference work entry

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DOI: https://doi.org/10.1007/978-3-642-27833-4_1820-8


Chemical Formula



The radical C3H can exist in either a linear form (l-C3H) or as a tricarbon ring with the attached hydrogen atom (c-C3H). Both isomers have been detected at millimeter wavelengths in the interstellar medium and in the envelopes of evolved stars. C3H is an important intermediary in the production of heavier species of the form CnH (n > 3), which have been detected astronomically for n = 4–8. The linear propynylidynium ion, C3H+, has also been reported in the interstellar medium (Pety et al. 2012).


References and Further Reading

  1. Pety J, Gratier P, Guzmán V, Roueff E, Gerin M, Goicoechea JR, Bardeau S, Sievers A, Le Petit F, Le Bourlot J, Belloche A, Talbi D (2012) The IRAM-30 m line survey of the Horsehead PDR. II. First detection of the l-C3H+ hydrocarbon cation. Astron Astrophys 548:A68ADSCrossRefGoogle Scholar
  2. Thaddeus P, Gottlieb CA, Hjalmarson A, Johansson LEB, Irvine WM, Friberg P, Linke RA (1985) Astronomical identification of the C3H radical. Astrophys J 294:L49–L53ADSCrossRefGoogle Scholar
  3. Yamamoto S, Saito S, Ohishi M, Suzuki H, Ishikawa S, Kaifu N, Murakami A (1987) Laboratory and astronomical detection of the cyclic C3H radical. Astrophys J 322:L55–L58ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of AstronomyUniversity of MassachusettsAmherstUSA