English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Gas phase detection and rotational spectroscopy of ethynethiol, HCCSH

Lee, K. L. K., Martin-Drumel, M.-A., Lattanzi, V., A., B. M., Caselli, P., & McCarthy, M. C. (2019). Gas phase detection and rotational spectroscopy of ethynethiol, HCCSH. Molecular Physics, 117(9-12), 1381-1391. doi:10.1080/00268976.2018.1552028.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0004-82EE-D Version Permalink: http://hdl.handle.net/21.11116/0000-0004-82EF-C
Genre: Journal Article

Files

show Files
hide Files
:
Gas phase detection and rotational spectroscopy of ethynethiol, HCCSH.pdf (Any fulltext), 2MB
 
File Permalink:
-
Name:
Gas phase detection and rotational spectroscopy of ethynethiol, HCCSH.pdf
Description:
-
Visibility:
Private
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Lee, Kin Long Kelvin, Author
Martin-Drumel, Marie-Aline, Author
Lattanzi, Valerio1, Author              
A., Brett McGuire, Author
Caselli, Paola1, Author              
McCarthy, Michael C., Author
Affiliations:
1Center for Astrochemical Studies at MPE, MPI for Extraterrestrial Physics, Max Planck Society, ou_1950287              

Content

show
hide
Free keywords: -
 Abstract: We report the gas-phase detection and spectroscopic characterisation of ethynethiol (HCCSH), a metastable isomer of thioketene (H2C2S) using a combination of Fourier-transform microwave and submillimetre-wave spectroscopies. Several a-type transitions of the normal species were initially detected below 40 GHz using a supersonic expansion-electrical discharge source, and subsequent measurement of higher-frequency, b-type lines using double resonance provided accurate predictions in the submillimetre region. With these, searches using a millimetre-wave absorption spectrometer equipped with a radio frequency discharge source were conducted in the range 280–660 GHz, ultimately yielding nearly 100 transitions up to rR0(36) and rQ0(68). From the combined data set, all three rotational constants and centrifugal distortion terms up to the sextic order were determined to high accuracy, providing a reliable set of frequency predictions to the lower end of the THz band. Isotopic substitution has enabled both a determination of the molecular structure of HCCSH and, by inference, its formation pathway in our nozzle discharge source via the bimolecular radical-radical recombination reaction SH+C2H, which is calculated to be highly exothermic (−477 kJ/mol) using the HEAT345(Q) thermochemical scheme.

Details

show
hide
Language(s):
 Dates: 2019-11-29
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1080/00268976.2018.1552028
Other: LOCALID: 3154457
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Molecular Physics
  Other : Mol. Phys.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: London : Taylor & Francis
Pages: - Volume / Issue: 117 (9-12) Sequence Number: - Start / End Page: 1381 - 1391 Identifier: ISSN: 0026-8976
CoNE: https://pure.mpg.de/cone/journals/resource/954925264211