NCCN in TMC-1 and IRC+10216

Details NCCN in TMC-1 and IRC+10216 NCCN in TMC-1 and IRC+10216

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003mnras.341..609p&link_type=abstract

Monthly Notice of the Royal Astronomical Society, Volume 341, Issue 2, pp. 609-616.

Astronomy and Astrophysics

Astronomy

3

Molecular Data, Molecular Processes, Circumstellar Matter, Stars: Individual: Irc+10216, Ism: Individual: Tmc-1, Ism: Molecules

Scientific paper

We employ quantum chemical calculations using the CBS-RAD (`Complete Basis Set - Radicals') technique on the C2N2H potential energy surface to show that the reaction of HNC with CN is a viable and plausible route to NCCN in cold astrophysical environments. We use detailed chemical kinetic models to predict the abundance of NCCN in TMC-1 and IRC+10216. Radio-astronomical detection of NCCN is precluded by its lack of a dipole moment. We discuss other prospects for its observation in interstellar and circumstellar environments, by space-borne infrared spectroscopy, indirectly by detection of the NCCNH+ ion, or inferentially by detection of its higher-energy, polar isomer CNCN.

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