Articles with "rotational spectrum" as a keyword



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The low internal rotation barriers of halogenated toluenes: Rotational spectrum of 2,4-difluorotoluene

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Published in 2017 at "Journal of Molecular Spectroscopy"

DOI: 10.1016/j.jms.2017.10.003

Abstract: Abstract The rotational spectrum of 2,4-difluorotoluene in the region 5–25 GHz has been studied by pulsed supersonic jet using Fourier transform microwave spectroscopy. The tunneling splitting due to the methyl internal rotation in the ground torsional… read more here.

Keywords: spectrum difluorotoluene; internal rotation; rotational spectrum; spectroscopy ... See more keywords
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Internal rotation in halogenated toluenes: Rotational spectrum of 2,3-difluorotoluene

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Published in 2018 at "Journal of Molecular Spectroscopy"

DOI: 10.1016/j.jms.2018.04.007

Abstract: Abstract The microwave rotational spectrum of 2,3-difluorotoluene has been studied by pulsed supersonic jet using Fourier transform microwave spectroscopy. The tunneling splitting due to the methyl internal rotation in the ground torsional state could be… read more here.

Keywords: spectrum difluorotoluene; internal rotation; rotational spectrum; spectroscopy ... See more keywords
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Rotational spectrum of 2,2,2-trifluoroacetophenone

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Published in 2018 at "Journal of Molecular Spectroscopy"

DOI: 10.1016/j.jms.2018.06.006

Abstract: Abstract The rotational spectrum of 2,2,2-trifluoroacetophenone has been measured and assigned by supersonic-jet Fourier transform microwave spectroscopy in the 2.0–20.0 GHz region. The measurement has been also extended to all its mono-13C substituted species, from which… read more here.

Keywords: spectrum trifluoroacetophenone; rotational spectrum; spectroscopy;
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The rotational spectrum and derived structure of 1,2,3-triazine

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Published in 2019 at "Journal of Molecular Spectroscopy"

DOI: 10.1016/j.jms.2018.11.012

Abstract: Abstract The close similarity in patterns of bands in the microwave spectra of the isomeric 1,2,3- and 1,2,4-triazines has enabled assignment for the 1,2,3-isomer. Pure rotational transitions with J up to 65 were identified and… read more here.

Keywords: derived structure; rotational spectrum; spectroscopy; spectrum derived ... See more keywords
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The rotational spectrum of 1,2,3,4-tetrahydroquinoline: The extended study

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Published in 2019 at "Journal of Molecular Spectroscopy"

DOI: 10.1016/j.jms.2019.01.003

Abstract: Abstract In the present study, the millimeter and submillimeter high-resolution rotational spectra of the most stable conformer of 1,2,3,4-tetrahydroquinoline were recorded up to 500 GHz. Almost 3800 new ground state a-type R-branch, b-type R-branch and c-type… read more here.

Keywords: rotational spectrum; type branch; study; tetrahydroquinoline ... See more keywords
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Deuterium hyperfine splittings in the rotational spectrum of NH2D as revealed by Lamb-dip spectroscopy

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Published in 2020 at "Journal of Molecular Spectroscopy"

DOI: 10.1016/j.jms.2020.111291

Abstract: Abstract In the context of radio-astronomical observations, laboratory experiments constitute a cornerstone in the interpretation of rich line surveys due to the concomitant presence of numerous emitting molecules. Here, we report the investigation of three… read more here.

Keywords: rotational spectrum; deuterium; hyperfine; spectroscopy ... See more keywords
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The low-barrier methyl internal rotation in the rotational spectrum of 3-methylphenylacetylene

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Published in 2020 at "Journal of Molecular Structure"

DOI: 10.1016/j.molstruc.2020.128109

Abstract: Abstract The rotational spectrum of 3-methylphenylacetylene has been recorded in the 2–8 GHz region using a chirped-pulse broadband microwave spectrometer. Torsion-rotation transition splittings are observed from a tunneling motion along the methyl internal rotation axis. The… read more here.

Keywords: internal rotation; methyl internal; rotational spectrum; rotation ... See more keywords
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Rotational spectrum of methoxyamine up to 480 GHz: a laboratory study and astronomical search.

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Published in 2018 at "Astronomy and astrophysics"

DOI: 10.1051/0004-6361/201730744

Abstract: Aims Methoxyamine is a potential interstellar amine that has been predicted by gas-grain chemical models for the formation of complex molecules. The aim of this work is to provide direct experimental frequencies of its ground-vibrational… read more here.

Keywords: methoxyamine; spectrum methoxyamine; 480 ghz; rotational spectrum ... See more keywords