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On Oxygen-terminated Carbon Chain Molecules CnO in Space
Oxoethenylidene, C<sub>2</sub>O
CCO has been detected first toward TMC-1:
M. Ohishi, H. Suzuki, S.-I. Ishikawa, C. Yamada, H. Kanamori, W. M. Irvine, R. D. Brown, P. D. Godfrey, N. Kaifu,
Detection of a new carbon-chain molecule, CCO
Astrophys. J. 380, L39–L42 (1991).
The NJ = 12 – 01 and 23 – 12 transitions were detected with the 43 m Green Bank telescope and the 45 m Nobeyama telecope, respectively, at 22258 and 45827 MHz.
Oxopropadienylidene, C<sub>3</sub>O
Oxopentatetraenylidene, C<sub>5</sub>O
Contributor(s): H. S. P. Müller; 12, 2003; 09, 2012; 12, 2021