Year: 1998
Type: article
Abstract: The cyanopropynyl radical, H 2 CCCCN, was detected in a supersonic molecular beam by Fourier transform microwave spectroscopy. For the normal and 15 N species, 89 and 40 hyperfine components, respectively, from four successive rotational transitions ( N = 2 → 1 to 5 → 4) in the lowest energy ( K a = 0) rotational ladder were measured between 8 and 22 GHz to an uncertainty of 5 kHz. With this data, the microwave constants of cyanopropynyl, including the fine and hyperfine coupling constants, are determined to very high accuracy, and the most interesting lines in the radio spectrum from an astronomical standpoint can now be calculated to a fraction of 1 km s -1 in equivalent radial velocity.
Source: The Astrophysical Journal
DOI: 10.1086/305066
Language: English
Subfield: Spectroscopy
Field: Chemistry
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2009592028