Details
| Original language | English |
|---|---|
| Pages (from-to) | 199-201 |
| Number of pages | 3 |
| Journal | Journal of molecular spectroscopy |
| Volume | 255 |
| Issue number | 2 |
| Early online date | 24 Mar 2009 |
| Publication status | Published - Jun 2009 |
| Externally published | Yes |
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.
Keywords
- Free internal rotation, Large amplitude motions, Microwave spectroscopy, Rotational spectroscopy, Supersonic expansions
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Chemistry(all)
- Spectroscopy
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Journal of molecular spectroscopy, Vol. 255, No. 2, 06.2009, p. 199-201.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
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
N1 - Funding Information: We thank the University of Bologna, the Land Niedersachsen and the Deutsche Forschungsgemeinschaft (DFG) for financial support.
PY - 2009/6
Y1 - 2009/6
N2 - 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.
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
UR - http://www.scopus.com/inward/record.url?scp=67349164798&partnerID=8YFLogxK
U2 - 10.1016/j.jms.2009.03.007
DO - 10.1016/j.jms.2009.03.007
M3 - Article
AN - SCOPUS:67349164798
VL - 255
SP - 199
EP - 201
JO - Journal of molecular spectroscopy
JF - Journal of molecular spectroscopy
SN - 0022-2852
IS - 2
ER -