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On Etheneimine in the ISM
The detection of etheneimine, aka ketenimine, in Sgr B2(N-LMH) has been reported very recently:
F. J. Lovas, J. M. Hollis, A. R. Remijan,and P. R. Jewell,
Detection of Ketenimine (CH<sub>2</sub>CNH) in Sgr B2(N) Hot Cores
Astrophys. J. 645, L137–L140 (2006).
Three lines have been detected thus far of which one line may show partially resolved hyperfine structure.
The proposed single state temperature of 65 K appears to be peculiar and may indicate non-thermal population.
Contributor(s): H. S. P. Müller; 06, 2006; 12, 2021