Microwave spectroscopy of CD3SH in the ground state

Kaori Kobayashi; Wataru Nakamura; Tatsuro Matsushima; Shozo Tsunekawa; Nobukimi Ohashi

doi:10.1016/j.jms.2017.05.004

Microwave spectroscopy of CD₃SH in the ground state

Kaori Kobayashi^*, Wataru Nakamura, Tatsuro Matsushima, Shozo Tsunekawa, Nobukimi Ohashi

^*Corresponding author for this work

Department of Physics

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

4 Scopus citations

Abstract

There are many sulfur-containing molecules identified in interstellar medium. However, methyl mercaptan (methanethiol, CH₃SH) is so far, the only confirmed complex organic molecule and further study on its isotopologues would be worthwhile. With the aid of the new high-sensitivity telescopes, it may be possible to detect CD₃SH since CD₃OH was already detected. The rest frequencies of CD₃SH are indispensable information. In the present study of CD₃SH in the ground state, 484 A-species transitions and 581 E-species transitions up to J = 46 and K_a = 10, were least-squares-analyzed by using the pseudo-principal axis method (PAM) Hamiltonian with 22 parameters consisting of rotational, centrifugal distortion, and internal-rotational constants.

Original language	English
Pages (from-to)	32-36
Number of pages	5
Journal	Journal of Molecular Spectroscopy
Volume	337
DOIs	https://doi.org/10.1016/j.jms.2017.05.004
State	Published - 2017/07

Keywords

Methyl internal rotation
Methyl mercaptan
Microwave spectroscopy
Pseudo-PAM method

ASJC Scopus subject areas

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

Access to Document

10.1016/j.jms.2017.05.004

Cite this

@article{57117f841b774737bdc2071420a7059f,

title = "Microwave spectroscopy of CD3SH in the ground state",

abstract = "There are many sulfur-containing molecules identified in interstellar medium. However, methyl mercaptan (methanethiol, CH3SH) is so far, the only confirmed complex organic molecule and further study on its isotopologues would be worthwhile. With the aid of the new high-sensitivity telescopes, it may be possible to detect CD3SH since CD3OH was already detected. The rest frequencies of CD3SH are indispensable information. In the present study of CD3SH in the ground state, 484 A-species transitions and 581 E-species transitions up to J = 46 and Ka = 10, were least-squares-analyzed by using the pseudo-principal axis method (PAM) Hamiltonian with 22 parameters consisting of rotational, centrifugal distortion, and internal-rotational constants.",

keywords = "Methyl internal rotation, Methyl mercaptan, Microwave spectroscopy, Pseudo-PAM method",

author = "Kaori Kobayashi and Wataru Nakamura and Tatsuro Matsushima and Shozo Tsunekawa and Nobukimi Ohashi",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Inc.",

year = "2017",

month = jul,

doi = "10.1016/j.jms.2017.05.004",

language = "英語",

volume = "337",

pages = "32--36",

journal = "Journal of Molecular Spectroscopy",

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TY - JOUR

T1 - Microwave spectroscopy of CD3SH in the ground state

AU - Kobayashi, Kaori

AU - Nakamura, Wataru

AU - Matsushima, Tatsuro

AU - Tsunekawa, Shozo

AU - Ohashi, Nobukimi

PY - 2017/7

Y1 - 2017/7

N2 - There are many sulfur-containing molecules identified in interstellar medium. However, methyl mercaptan (methanethiol, CH3SH) is so far, the only confirmed complex organic molecule and further study on its isotopologues would be worthwhile. With the aid of the new high-sensitivity telescopes, it may be possible to detect CD3SH since CD3OH was already detected. The rest frequencies of CD3SH are indispensable information. In the present study of CD3SH in the ground state, 484 A-species transitions and 581 E-species transitions up to J = 46 and Ka = 10, were least-squares-analyzed by using the pseudo-principal axis method (PAM) Hamiltonian with 22 parameters consisting of rotational, centrifugal distortion, and internal-rotational constants.

AB - There are many sulfur-containing molecules identified in interstellar medium. However, methyl mercaptan (methanethiol, CH3SH) is so far, the only confirmed complex organic molecule and further study on its isotopologues would be worthwhile. With the aid of the new high-sensitivity telescopes, it may be possible to detect CD3SH since CD3OH was already detected. The rest frequencies of CD3SH are indispensable information. In the present study of CD3SH in the ground state, 484 A-species transitions and 581 E-species transitions up to J = 46 and Ka = 10, were least-squares-analyzed by using the pseudo-principal axis method (PAM) Hamiltonian with 22 parameters consisting of rotational, centrifugal distortion, and internal-rotational constants.

KW - Methyl internal rotation

KW - Methyl mercaptan

KW - Microwave spectroscopy

KW - Pseudo-PAM method

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