Details
| Original language | English |
|---|---|
| Pages (from-to) | 111-117 |
| Number of pages | 7 |
| Journal | Chemical physics |
| Volume | 312 |
| Issue number | 1-3 |
| Publication status | Published - 6 Jun 2005 |
Abstract
The rotational spectrum of the molecular complex difluorodimethylsilane- argon has been investigated by pulsed jet absorption millimeter wave and pulsed supersonic jet Fourier transform microwave spectroscopy. The absolute energy minimum corresponds to a conformation with the argon atom lying in the F-Si-F plane of symmetry of difluorodimethylsilane. This is confirmed by the analysis of the observed splitting due to the internal rotation of two equivalent methyl groups. The V3 barrier to the internal rotation of the two methyl groups has been determined to be 4.857(5) kJ/mol. The distance of Ar from the center of mass of difluorodimethylsilane is 4.07 Å, with Ar-Si line forming an angle of 60.6° with the C-Si-C bisector. The zero point dissociation energy is estimated, from the centrifugal distortion constant DJ, to be 2.75 kJ/mol.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Chemical physics, Vol. 312, No. 1-3, 06.06.2005, p. 111-117.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Molecular complexes of organo-metallic molecules with rare gases
T2 - The rotational spectrum of difluorodimethylsilane-argon
AU - Giuliano, Barbara M.
AU - Ottaviani, Paolo
AU - Caminati, Walther
AU - Schnell, Melanie
AU - Banser, Deike
AU - Grabow, Jens Uwe
N1 - Funding Information: We thank the Ministero dell’Istruzione, dell’Università e della Ricerca (MIUR) and the Deutscher Akademischer Austauschdienst (DAAD) for funding the exchange visits between the Bologna and Hannover groups (Progetto VIGONI 2003 21-2002 and Projekt PPP D/0231300, respectively). The Bologna authors also thank the University of Bologna (funds for special topics) and MIUR for support as COFIN 2002. The Hannover group thanks the Deutsche Forschungsgemeinschaft (DFG) and the Land Niedersachsen for financial support. M.S. thanks the Fonds der Chemischen Industrie for a PhD grant.
PY - 2005/6/6
Y1 - 2005/6/6
N2 - The rotational spectrum of the molecular complex difluorodimethylsilane- argon has been investigated by pulsed jet absorption millimeter wave and pulsed supersonic jet Fourier transform microwave spectroscopy. The absolute energy minimum corresponds to a conformation with the argon atom lying in the F-Si-F plane of symmetry of difluorodimethylsilane. This is confirmed by the analysis of the observed splitting due to the internal rotation of two equivalent methyl groups. The V3 barrier to the internal rotation of the two methyl groups has been determined to be 4.857(5) kJ/mol. The distance of Ar from the center of mass of difluorodimethylsilane is 4.07 Å, with Ar-Si line forming an angle of 60.6° with the C-Si-C bisector. The zero point dissociation energy is estimated, from the centrifugal distortion constant DJ, to be 2.75 kJ/mol.
AB - The rotational spectrum of the molecular complex difluorodimethylsilane- argon has been investigated by pulsed jet absorption millimeter wave and pulsed supersonic jet Fourier transform microwave spectroscopy. The absolute energy minimum corresponds to a conformation with the argon atom lying in the F-Si-F plane of symmetry of difluorodimethylsilane. This is confirmed by the analysis of the observed splitting due to the internal rotation of two equivalent methyl groups. The V3 barrier to the internal rotation of the two methyl groups has been determined to be 4.857(5) kJ/mol. The distance of Ar from the center of mass of difluorodimethylsilane is 4.07 Å, with Ar-Si line forming an angle of 60.6° with the C-Si-C bisector. The zero point dissociation energy is estimated, from the centrifugal distortion constant DJ, to be 2.75 kJ/mol.
UR - http://www.scopus.com/inward/record.url?scp=15744399594&partnerID=8YFLogxK
U2 - 10.1016/j.chemphys.2004.11.028
DO - 10.1016/j.chemphys.2004.11.028
M3 - Article
AN - SCOPUS:15744399594
VL - 312
SP - 111
EP - 117
JO - Chemical physics
JF - Chemical physics
SN - 0301-0104
IS - 1-3
ER -