The microwave spectroscopy of trans-ethyl methyl ether in the ν29 = 1 excited torsional state

Kaori Kobayashi; Takanori Matsui; Shozo Tsunekawa; Nobukimi Ohashi

doi:10.1016/j.jms.2009.03.012

The microwave spectroscopy of trans-ethyl methyl ether in the ν₂₉ = 1 excited torsional state

Kaori Kobayashi^*, Takanori Matsui, Shozo Tsunekawa, Nobukimi Ohashi

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The trans-ethyl methyl ether molecule has two inequivalent methyl group internal rotors. One methyl rotor is bonded to the oxygen atom and the other to the carbon atom. The internal rotations of these methyl rotors correspond to the vibrational modes, ν₂₉ and ν₂₈, respectively. In this study, the microwave absorption spectrum in the ν₂₉ = 1 excited torsional state was analyzed for the first time. Initial assignment has been carried out by making use of measurements at dry ice temperature. Over 1500 lines up to J = 76 and K = 5 were assigned. The spectrum involving internal rotation splittings was analyzed by using the tunneling matrix formulation developed by Hougen. Crown

Original language	English
Pages (from-to)	164-171
Number of pages	8
Journal	Journal of Molecular Spectroscopy
Volume	255
Issue number	2
DOIs	https://doi.org/10.1016/j.jms.2009.03.012
State	Published - 2009/06

Keywords

Barrier height to internal rotation
Methyl internal rotation
Microwave spectroscopy
trans-Ethyl methyl ether

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry

Access to Document

10.1016/j.jms.2009.03.012

Cite this

@article{5e6a824591954ff68b7df67fd288a93b,

title = "The microwave spectroscopy of trans-ethyl methyl ether in the ν29 = 1 excited torsional state",

abstract = "The trans-ethyl methyl ether molecule has two inequivalent methyl group internal rotors. One methyl rotor is bonded to the oxygen atom and the other to the carbon atom. The internal rotations of these methyl rotors correspond to the vibrational modes, ν29 and ν28, respectively. In this study, the microwave absorption spectrum in the ν29 = 1 excited torsional state was analyzed for the first time. Initial assignment has been carried out by making use of measurements at dry ice temperature. Over 1500 lines up to J = 76 and K = 5 were assigned. The spectrum involving internal rotation splittings was analyzed by using the tunneling matrix formulation developed by Hougen. Crown",

keywords = "Barrier height to internal rotation, Methyl internal rotation, Microwave spectroscopy, trans-Ethyl methyl ether",

author = "Kaori Kobayashi and Takanori Matsui and Shozo Tsunekawa and Nobukimi Ohashi",

note = "Funding Information: This study was partially supported by Grant-in-Aid for Young Scientists (B) by the Ministry of Education, Culture, Sports, Science and Technology of Japan (Grant No. 20740103) and National Astronomical Observatory of Japan. ",

year = "2009",

month = jun,

doi = "10.1016/j.jms.2009.03.012",

language = "英語",

volume = "255",

pages = "164--171",

journal = "Journal of Molecular Spectroscopy",

issn = "0022-2852",

publisher = "Academic Press Inc.",

number = "2",

}

TY - JOUR

T1 - The microwave spectroscopy of trans-ethyl methyl ether in the ν29 = 1 excited torsional state

AU - Kobayashi, Kaori

AU - Matsui, Takanori

AU - Tsunekawa, Shozo

AU - Ohashi, Nobukimi

N1 - Funding Information: This study was partially supported by Grant-in-Aid for Young Scientists (B) by the Ministry of Education, Culture, Sports, Science and Technology of Japan (Grant No. 20740103) and National Astronomical Observatory of Japan.

PY - 2009/6

Y1 - 2009/6

N2 - The trans-ethyl methyl ether molecule has two inequivalent methyl group internal rotors. One methyl rotor is bonded to the oxygen atom and the other to the carbon atom. The internal rotations of these methyl rotors correspond to the vibrational modes, ν29 and ν28, respectively. In this study, the microwave absorption spectrum in the ν29 = 1 excited torsional state was analyzed for the first time. Initial assignment has been carried out by making use of measurements at dry ice temperature. Over 1500 lines up to J = 76 and K = 5 were assigned. The spectrum involving internal rotation splittings was analyzed by using the tunneling matrix formulation developed by Hougen. Crown

AB - The trans-ethyl methyl ether molecule has two inequivalent methyl group internal rotors. One methyl rotor is bonded to the oxygen atom and the other to the carbon atom. The internal rotations of these methyl rotors correspond to the vibrational modes, ν29 and ν28, respectively. In this study, the microwave absorption spectrum in the ν29 = 1 excited torsional state was analyzed for the first time. Initial assignment has been carried out by making use of measurements at dry ice temperature. Over 1500 lines up to J = 76 and K = 5 were assigned. The spectrum involving internal rotation splittings was analyzed by using the tunneling matrix formulation developed by Hougen. Crown

KW - Barrier height to internal rotation

KW - Methyl internal rotation

KW - Microwave spectroscopy

KW - trans-Ethyl methyl ether

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U2 - 10.1016/j.jms.2009.03.012

DO - 10.1016/j.jms.2009.03.012

M3 - 学術論文

AN - SCOPUS:67349218379

SN - 0022-2852

VL - 255

SP - 164

EP - 171

JO - Journal of Molecular Spectroscopy

JF - Journal of Molecular Spectroscopy

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ER -