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On the Detection of Ethynylcyclopentadienes in the ISM
J. Cernicharo, M. Agúndez, R. I. Kaiser, C. Cabezas, B. Tercero, N. Marcelino, J. R. Pardo, and P. de Vicente
reported on the
Discovery of two isomers of ethynyl cyclopentadiene in TMC-1: Abundances of CCH and CN derivatives of hydrocarbon cycles
Astron. Astrophys. 655, Art. No. L1 (2021).
Both low-lying isomers, 1- and 2-ethynyl cyclopentadiene, were indentified in the course of a molecular line survey of the prototypical cold dark molecular cloud TMC-1 carried out with the Yebes 40 m radio telescope between 31.0 and 50.3 GHz.