MILLIMETER-WAVE SPECTROSCOPY OF ACETYL CHLORIDE AND ACETYL BROMIDE

Gyawali, Prakash

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Description

Title

MILLIMETER-WAVE SPECTROSCOPY OF ACETYL CHLORIDE AND ACETYL BROMIDE

Author(s)

Gyawali, Prakash

Contributor(s)

• Margulès, L.
• Motiyenko, R. A.

Issue Date

2023-06-19

Keyword(s)

• Large amplitude motions
• internal rotation

Abstract

Millimeter-wave spectra of acetyl chloride (CH₃COCl) and acetyl bromide (CH₃COBr) were measured in the frequency range 50–330 GHz. From a spectroscopic point of view, these molecules are interesting cases for studying methyl top internal rotation with relatively strong nuclear quadrupole coupling. Due to nonzero quadrupole moment of Cl and Br, the quadrupole hyperfine splittings in CH₃COCl and CH₃COBr molecules are comparable with splittings due to internal rotation. To fit the observed rotational transitions we used the so-called Rho-Axis-Method and RAM36hf codeᵇ that take nuclear quadrupole hyperfine structure into account. The analysis, which is in progress, includes the ground vibrational state as well as lowest excited torsional states. The latest results will be presented.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Language

eng

Handle URL

https://hdl.handle.net/2142/122567

DOI

https://doi.org/10.15278/isms.2023.7056

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