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The three-membered ring compound aziridine (c-C2H5N) has been the subject of
several searches. In 2001,
Dickens and coworkers claimed a tentative
detection of the compound based on a single transition toward several hot cores, including Sgr B2(N).
In 2004, Kuan and coworkers also claimed
a tentative identification of aziridine toward Orion KL and W51 e1/e2 based on limited data. Most recently,
Barnum and coworkers were not able to detect
aziridine toward TMC-1. Their search included 155 lines reported in a spectroscopic study of aziridine by
Thorwirth and coworkers. They placed
an upper limit of about 2 x 10–13 cm–2 on the column density
of aziridine toward TMC-1 using survey data collected by the 100m
Green Bank Telescope.
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