Rotational spectrum of trifluoroacetic acid: Extension of the measurements by chirped-pulse spectroscopy

IF 1.4 4区物理与天体物理 Q4 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL

Journal of Molecular Spectroscopy Pub Date : 2025-02-01 DOI:10.1016/j.jms.2025.111986

Greta Naso , Filippo Baroncelli , Luca Evangelisti , Assimo Maris , Sonia Melandri

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引用次数: 0

Abstract

The rotational spectrum of trifluoroacetic acid has been recorded at room temperature in the 18–26 GHz frequency range using a chirped-pulse Fourier transform microwave (CP-FTMW) spectrometer. More than 180 new spectral lines have been identified and assigned to transitions within the vibrational ground state. A global fitting has been performed by incorporating spectroscopic data from previous studies, leading to the refinement of the molecular parameters. Two fitting models using Watson’s

S

-reduction and

A

-reduction are proposed, allowing the determination of

h_{3}

for the first model and

Φ_{J K}

Φ_{K J}

, and

ϕ_{K}

for the second one.

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来源期刊

Journal of Molecular Spectroscopy 物理-光谱学

CiteScore

2.70

自引率

21.40%

发文量

审稿时长

29 days

期刊介绍： The Journal of Molecular Spectroscopy presents experimental and theoretical articles on all subjects relevant to molecular spectroscopy and its modern applications. An international medium for the publication of some of the most significant research in the field, the Journal of Molecular Spectroscopy is an invaluable resource for astrophysicists, chemists, physicists, engineers, and others involved in molecular spectroscopy research and practice.