Rotational spectrum of methyl pivalate

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https://hdl.handle.net/2142/100726

Title: Rotational spectrum of methyl pivalate
Author(s): Kuze, Nobuhiko
Contributor(s): Kawashima, Yoshiyuki
Issue Date: 2018-06-18
Keyword(s): Structure determination
Abstract: The rotational spectrum of methyl pivalate (t-BuC(O)OCH3) in the ground vibrational state was observed by molecular beam-Fourier transform microwave spectroscopy. Thirty b-type rotational transitions were assigned. Some high-Ka lines were found to be split and we have interpreted these splittings in terms of the internal rotation of the methyl group. Some forbidden transitions were also observed in case where Ka = 2 levels were involved in the internal rotation with E state. The observed spectra including the forbidden transitions were analyzed using XIAM program. Spectral assignment confirmed that the observed spectral splitting was due to the methyl rotation of the methoxy group. In comparison with the theoretical rotational constants, observed rotational constants indicated the molecule took a trans-zigzag conformation for C-C-C-O-C skeleton with Cs symmetry.
Publisher: International Symposium on Molecular Spectroscopy
Type of Resource: text
Language: eng
Permalink: http://hdl.handle.net/2142/100726
DOI: 10.15278/isms.2018.ML05