Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...212l..87w&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 212, Mar. 1, 1977, p. L87-L90.
Astronomy and Astrophysics
Astrophysics
56
Butadiene, Cyano Compounds, Free Radicals, Hartree Approximation, Interstellar Matter, Microwave Spectra, Dipole Moments, Electron States, Hyperfine Structure
Scientific paper
Quantum-mechanical calculations, using the matrix Hartree-Fock model, have been performed for the butadiynyl and cyanoethynyl radicals. A rotation constant of 4753 MHz is calculated for C4H, while for C3N the value 4955 MHz is obtained. These may be compared with the rotation constant of 4947.5 MHz derived from the recently observed doublets in the millimeter-wave spectrum of IRC + 10216, suggesting the cyanoethynyl radical as the carrier species of these lines. The electric dipole moment and hyperfine coupling constants of both species are predicted.
Green Shaun
Wilson Stephen
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