molecules:ism:c3n-minus [CDMS classic documentation]

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===== On the Detection of the Cyanoethynylide Ion, C3N–, in Space =====

The cyanoethynylide ion has been detected toward the carbon rich star IRC +10216 in 4 rotational transitions from //J// = 10 – 9 to 15 – 14 which occur in the 3 and 2 mm regions:\\
P. Thaddeus, C. A. Gottlieb, H. Gupta, S. Brünken, M. C. McCarthy, M. Agúndez, M. Guélin, and J. Cernicharo,\\
**[[https://doi.org/10.1086/528947|Laboratory and Astronomical Detection of the Negative Molecular Ion C<sub>3</sub>N<sup>–</sup>]]**\\
//Astrophys. J.// **677**, 1132–1139 (2008).\\
This anion is isolelectronic to C<sub>4</sub>H<sup>–</sup>. Besides the presently more common C<sub>2n</sub>H<sup>–</sup> family, it is the first member of a second family of anions detected in space, C<sub>2n–1</sub>N<sup>–</sup>.\\
It was searched for, but not found in TMC-1.\\

Meanwhile,\\
J. Cernicharo, N. Marcelino, J. R. Pardo, M. Agúndez, B. Tercero, P. de Vicente, C. Cabezas, and C. Bermúdez\\
reported on\\
**[[https://doi.org/10.1051/0004-6361/202039231|Interstellar nitrile anions: Detection of C<sub>3</sub>N<sup>–</sup> and C<sub>5</sub>N<sup>–</sup> in TMC-1]]**\\
//Astron. Astrophys.// **641**, Art. No. L9 (2020).\\


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Contributor(s): H. S. P. Müller; 04, 2008; 09, 2020

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