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Laboratory detection of a new interstellar free radical CH2CN(2B1)An asymmetric-top free radical CH2CN with a 2B1 ground state was detected by laboratory microwave spectroscopy. The radical was produced in a free-space absorption cell by a DC glow discharge in pure CH3CN gas. About 60 fine-structure components were observed for the N = 11-10 to 14-13 a-type rotational transitions in the frequency region of 220-260 GHz. Hyperfine resolved components for the N = 4-3 and 5-4 transitions were resolved in the 80 and 100 GHz regions, respectively. Molecular constants were determined and U100602 and U80484 from Sgr B2, and U40240 and U20120 from TMC-1 were assigned to the N = 5-4, 4-3, 2-1, and 1-0 transitions with K(-1) = 0 of the CH2CN radical.
Document ID
19890029334
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Saito, Shuji
(Nagoya Univ. Aichi, Japan)
Yamamoto, Satoshi
(Nagoya University Japan)
Irvine, W. M.
(Nagoya Univ. Aichi, Japan)
Ziurys, L. M.
(Five College Radio Astronomy Observatory Amherst, MA, United States)
Suzuki, Hiroko
(Nobeyama Radio Observatory Minamimaki, Japan)
Date Acquired
August 14, 2013
Publication Date
November 15, 1988
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 334
ISSN: 0004-637X
Subject Category
Atomic And Molecular Physics
Accession Number
89A16705
Funding Number(s)
CONTRACT_GRANT: NAGW-436
Distribution Limits
Public
Copyright
Other

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