Synchrotron-based Fourier transform spectra of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si78.gif" overflow="scroll"><mml:mrow><mml:msub><mml:mrow><mml:mi>ν</mml:mi></mml:mrow><mml:mrow><mml:mn>23</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si79.gif" overflow="scroll"><mml:mrow><mml:msub><mml:mrow><mml:mi>ν</mml:mi></mml:mrow><mml:mrow><mml:mn>24</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math> IR b

Pirali, Olivier; Boudon, Vincent

doi:10.1016/j.jms.2015.02.004

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…The first and simplest spherical top molecule, methane, has already been spectroscopically analyzed long time ago (e.g., by Moorhead [22] in 1932), but more complex spherical tops still need a more thorough analysis or have been analyzed recently -like germane [23] or adamantane. [24,25] This article presents an extension to our previous research on neopentane infrared spectra, [26][27][28] analyzing a spectrum with high resolution observed at low temperature, which is favorable for the experimental observation of neopentane's fundamental vibrations. We provide a detailed analysis of the rovibrational spectra by use of a tensorial formalism -a useful tool for the analysis of spherical tops.…”

Section: Introductionmentioning

confidence: 99%

High resolution infrared spectra of neopentane: Rovibrational analysis of bands at 8.3–6.4 μm

Pastorek,

Bernath,

Boudon

2023

Journal of Quantitative Spectroscopy and Radiative Transfer

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Section: Introductionmentioning

confidence: 99%

High resolution infrared spectra of neopentane: Rovibrational analysis of bands at 8.3–6.4 μm

Pastorek,

Bernath,

Boudon

2023

Journal of Quantitative Spectroscopy and Radiative Transfer

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Rotational and vibrational spectroscopy of 1-cyanoadamantane and 1-isocyanoadamantane

Chitarra

Martin‐Drumel

Buchanan

et al. 2021

Journal of Molecular Spectroscopy

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Continuous probing of cold complex molecules with infrared frequency comb spectroscopy

Spaun

Changala

Patterson

et al. 2016

Nature

118

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Abstract-Cavity-enhanced frequency comb spectroscopy for molecule detection in the mid-infrared powerfully combines high resolution, high sensitivity, and broad spectral coverage [1]- [3]. However, this technique, and essentially all spectroscopic methods, is limited in application to relatively small, simple molecules. At room temperature, even molecules of modest size can occupy many millions of rovibrational states, resulting in highly congested spectra. Here we integrate comb spectroscopy with continuous, cold samples of molecules produced via buffer gas cooling [4], thus enabling the study of significantly more complex molecules. Until now, high resolution mid-IR spectroscopy of such molecules has been primarily performed with supersonic jets using single frequency lasers. In both sensitivity and spectral resolution, buffer gas sources are advantageous: they can be operated continuously, in contrast to most jets that are typically pulsed with a low duty cycle [5], [6]; and they provide samples moving slowly in the lab frame, with no observation of buffer gas-molecule clustering. Both of these features help to improve spectral resolution and detection sensitivity, as well as facilitate tracking of molecular interaction kinetics. Here we report simultaneous gains in resolution, sensitivity, and bandwidth and demonstrate this combined capability with the first rotationally resolved direct absorption spectra in the CH stretch region of several complex molecules. These include nitromethane (CH3NO2), a model system that presents challenging questions to the understanding of large amplitude vibrational motion [7]-[21], as well as several large organic molecules with fundamental spectroscopic and astrochemical relevance, including naphthalene (C10H8) [22], adamantane (C10H16) [23], and hexamethylenetetramine (C6N4H12) [24]-[27]. This general spectroscopic tool has the potential to significantly impact the field of molecular spectroscopy, simultaneously improving efficiency, spectral resolution, and specificity by orders of magnitude. This realization could open up new molecular species and new kinetics for precise investigations, including the study of complex molecules [28], weakly bound clusters [29], and cold chemistry [30].For over half a century, high-resolution infrared spectroscopy has provided a broad foundation for the fundamental understanding of molecular structure and dynamics. Spectroscopic analysis of vibrational, rotational, fine, and hyperfine structure yields extraordinarily detailed information about the molecular Hamiltonian. The success of such studies, however, requires well resolved and assignable spectra, which have been largely limited to relatively small, simple molecular systems. While the study of large and more complex molecules is an emerging front that provides fundamental insights into the nature of energy flow in a strongly correlated system, acquiring useful and tractable spectra for complicated molecular species poses many experimental challenges. Large molecules with many internal...

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Synchrotron-based Fourier transform spectra of the ν23 and ν24 IR b

Cited by 4 publications

References 13 publications

High resolution infrared spectra of neopentane: Rovibrational analysis of bands at 8.3–6.4 μm

High resolution infrared spectra of neopentane: Rovibrational analysis of bands at 8.3–6.4 μm

Rotational and vibrational spectroscopy of 1-cyanoadamantane and 1-isocyanoadamantane

Continuous probing of cold complex molecules with infrared frequency comb spectroscopy

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