FTMW spectra of CH3OC(O)NCO and CH3OC(O)N3

Watanabe, Shinichiro

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https://hdl.handle.net/2142/100733 Copy

Description

Title

FTMW spectra of CH3OC(O)NCO and CH3OC(O)N3

Author(s)

Watanabe, Shinichiro

Contributor(s)

• Kuze, Nobuhiko
• Kawashima, Yoshiyuki

Issue Date

2018-06-18

Keyword(s)

Structure determination

Abstract

The rotational spectra of methoxycarbonyl isocyanate ( CH3OC(O)NCO) and methyl azidoformate (CH3OC(O)N3) in the ground vibrational state were observed by molecular beam-Fourier transform microwave spectroscopy. Observed spectral lines for a-type transitions were assigned. Splittings of the spectral lines were observed by the internal rotation of the CH3 group and the hyperfine structure of the 14N atom. Comparison of the observed spectroscopic constants with the calculated ones led to the conclusion that the assigned spectrum was due to the syn-syn form that NCO or N3 group. Determined parameters by the spectral analysis of methoxycarbonyl isocyanate were rotational, centrifugal distortion and nuclear electric quadrupole coupling constants including the potential barrier V3 to internal rotation of the methyl group. At this stage, we could not analyze the complicate nuclear electric quadrupole coupling splittings of the observed spectrum of methyl azidoformate due to the hyperfine structure.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/100733

DOI

10.15278/isms.2018.ML06

Copyright and License Information

Copyright 2018 Shinichiro Watanabe

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