The m = 0 state of the low-barrier torsion in α,α,α-trifluorobenzene (benzotrifluoride)

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • Laura Favero
  • Walther Caminati
  • Jens Uwe Grabow

Externe Organisationen

  • Consiglio Nazionale delle Ricerche (CNR)
  • Università di Bologna
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)199-201
Seitenumfang3
FachzeitschriftJournal of molecular spectroscopy
Jahrgang255
Ausgabenummer2
Frühes Online-Datum24 März 2009
PublikationsstatusVeröffentlicht - Juni 2009
Extern publiziertJa

Abstract

The m = 0 state of the low barrier torsion in α, α, α-trifluorobenzene (benzotrifluoride) is studied. Its room temperature spectrum is very complicated, because the molecule is very heavy, and the torsional spacings very small, according to the low value of internal top rotational constant F in the torsional energy term. The rotational spectra were measured in the 6 18 GHz frequency region using a coaxially oriented beam-resonator arrangement (COBRA-type) pulsed supersonic-jet FT-MW spectrometer operated with the FTMW++ set of programs. Each rotational transition is split by the Doppler effect as a result of the coaxial arrangement of the supersonic jet and resonator axes in the COBRA-FTMW spectrometer. It is observed that by exploiting the capability of FTMW spectroscopy in complicated and very dense rotational spectra, this will be successful in the near future.

ASJC Scopus Sachgebiete

Zitieren

The m = 0 state of the low-barrier torsion in α,α,α-trifluorobenzene (benzotrifluoride). / Favero, Laura; Caminati, Walther; Grabow, Jens Uwe.
in: Journal of molecular spectroscopy, Jahrgang 255, Nr. 2, 06.2009, S. 199-201.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Favero L, Caminati W, Grabow JU. The m = 0 state of the low-barrier torsion in α,α,α-trifluorobenzene (benzotrifluoride). Journal of molecular spectroscopy. 2009 Jun;255(2):199-201. Epub 2009 Mär 24. doi: 10.1016/j.jms.2009.03.007
Favero, Laura ; Caminati, Walther ; Grabow, Jens Uwe. / The m = 0 state of the low-barrier torsion in α,α,α-trifluorobenzene (benzotrifluoride). in: Journal of molecular spectroscopy. 2009 ; Jahrgang 255, Nr. 2. S. 199-201.
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abstract = "The m = 0 state of the low barrier torsion in α, α, α-trifluorobenzene (benzotrifluoride) is studied. Its room temperature spectrum is very complicated, because the molecule is very heavy, and the torsional spacings very small, according to the low value of internal top rotational constant F in the torsional energy term. The rotational spectra were measured in the 6 18 GHz frequency region using a coaxially oriented beam-resonator arrangement (COBRA-type) pulsed supersonic-jet FT-MW spectrometer operated with the FTMW++ set of programs. Each rotational transition is split by the Doppler effect as a result of the coaxial arrangement of the supersonic jet and resonator axes in the COBRA-FTMW spectrometer. It is observed that by exploiting the capability of FTMW spectroscopy in complicated and very dense rotational spectra, this will be successful in the near future.",
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T1 - The m = 0 state of the low-barrier torsion in α,α,α-trifluorobenzene (benzotrifluoride)

AU - Favero, Laura

AU - Caminati, Walther

AU - Grabow, Jens Uwe

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AB - The m = 0 state of the low barrier torsion in α, α, α-trifluorobenzene (benzotrifluoride) is studied. Its room temperature spectrum is very complicated, because the molecule is very heavy, and the torsional spacings very small, according to the low value of internal top rotational constant F in the torsional energy term. The rotational spectra were measured in the 6 18 GHz frequency region using a coaxially oriented beam-resonator arrangement (COBRA-type) pulsed supersonic-jet FT-MW spectrometer operated with the FTMW++ set of programs. Each rotational transition is split by the Doppler effect as a result of the coaxial arrangement of the supersonic jet and resonator axes in the COBRA-FTMW spectrometer. It is observed that by exploiting the capability of FTMW spectroscopy in complicated and very dense rotational spectra, this will be successful in the near future.

KW - Free internal rotation

KW - Large amplitude motions

KW - Microwave spectroscopy

KW - Rotational spectroscopy

KW - Supersonic expansions

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