Spectral extension of two glycolic acid conformers into the submillimeter regime

IF 1.4 4区 物理与天体物理 Q4 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL Journal of Molecular Spectroscopy Pub Date : 2023-05-01 DOI:10.1016/j.jms.2023.111791
Chase P. Schultz, Susanna L. Widicus Weaver
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Abstract

The rotational spectrum of glycolic acid has been extended to frequencies from 318 to 1000 GHz. Analysis of this spectrum builds upon previous experimental and theoretical studies performed on glycolic acid conformers. Extensive new assignments were made for the ground vibrational state of the SSC conformer of glycolic acid in addition to the two lowest vibrational states. Assignments were also expanded for the AAT conformer of glycolic acid. This work improves the precision of some rotational constants and nearly all of the centrifugal distortion constants for each conformer and vibrational state. The spectral predictions based on these refined parameters will facilitate the search for glycolic acid in the interstellar medium at frequencies covered by submillimeter observatories.

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两个乙醇酸构象的光谱延伸到亚毫米范围
乙醇酸的旋转光谱已扩展到318至1000千兆赫的频率。该光谱的分析建立在先前对乙醇酸构象进行的实验和理论研究的基础上。除了两个最低振动态外,还对乙醇酸SSC构象的基振动态进行了广泛的新赋值。对乙醇酸的AAT构象也进行了扩展。这项工作提高了一些旋转常数和几乎所有的离心畸变常数的精度,为每个共形体和振动状态。基于这些精细参数的光谱预测将有助于在亚毫米天文台覆盖的频率上寻找星际介质中的乙醇酸。
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来源期刊
CiteScore
2.70
自引率
21.40%
发文量
94
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.
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