Synchrotron-based infrared spectroscopy of the Coriolis perturbed ν6 and ν8 bands of trans-DCOOH
Synchrotron-based infrared spectroscopy of the Coriolis perturbed ν6 and ν8 bands of trans-DCOOH
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基于同步加速器的反式 DCOOH 科里奥利扰动 δ6 和 δ8 波段红外光谱
DOI:
10.1016/j.jms.2022.111718
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发表时间:
2022
影响因子:
1.4
通讯作者:
Raston, Paul L.
中科院分区:
文献类型:
--
作者:
Slaber, Lauren;Zhao, Jianbao;Billinghurst, Brant E.;Raston, Paul L.
Previously, the Coriolis perturbed ν6and ν8bands oftrans-DCOOH were analysed using a high-resolution infrared spectrum that only contained lines from the ν6fundamental; the ν8fundamental was too weak to be directly observed [Gohet al.,Spectrochim. Acta A: Mol. Biomol. Spectrosc.1999,55, 1309]. Using a long pathlength multireflection cell and highly brilliant synchrotron radiation, we were able to observe the ν8fundamental with excellent signal-to-noise (in addition to the ν6fundamental). Analysis of the spectra using PGOPHER and SPFIT resulted in determination of an extensive set of molecular parameters, including twoa-axis and fourb-axis Coriolis coupling constants. The set features a significant refinement of the ν8= 1 constants, with a band origin at 873.3848785(83) cm−1, which is ∼ 0.72 cm−1higher than previously determined.
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