Details
| Original language | English |
|---|---|
| Pages (from-to) | 1772-1778 |
| Number of pages | 7 |
| Journal | CHEMPHYSCHEM |
| Volume | 5 |
| Issue number | 11 |
| Publication status | Published - 12 Nov 2004 |
Abstract
The rotational spectrum of the molecular complex dimethylsilane-argon was investigated by free-jet absorption millimeter-wave and molecular-beam Fourier transform spectroscopy. The absolute energy minimum corresponds to a conformation in which the argon atom lies in the plane of symmetry of dimethylsilane, perpendicular to the C-Si-C plane. The distance of Ar from the center of mass of dimethylsilane is 3.90 Å, and the Ar atom is tilted 14° away from the Si atom. The zero-point dissociation energy was estimated from the centrifugal distortion constant Dj to be 2.2 kJ mol -1. Small splitting, due to tunneling of the Ar atom and internal rotation of the two methyl groups, was observed, measured, and used to determine the potential energy surface for these motions.
Keywords
- Argon, Gas-phase reactions, Noble gases, Rotational spectrpscopy, Van der Waals adducts
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: CHEMPHYSCHEM, Vol. 5, No. 11, 12.11.2004, p. 1772-1778.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Molecular complexes of organometallic molecules with noble gases
T2 - The rotational spectrum of dimethylsilane-argon
AU - Ottaviani, Paolo
AU - Melandri, Sonia
AU - Caminati, Walther
AU - Banser, Deike
AU - Schnell, Melanie
AU - Grabow, Jens Uwe
PY - 2004/11/12
Y1 - 2004/11/12
N2 - The rotational spectrum of the molecular complex dimethylsilane-argon was investigated by free-jet absorption millimeter-wave and molecular-beam Fourier transform spectroscopy. The absolute energy minimum corresponds to a conformation in which the argon atom lies in the plane of symmetry of dimethylsilane, perpendicular to the C-Si-C plane. The distance of Ar from the center of mass of dimethylsilane is 3.90 Å, and the Ar atom is tilted 14° away from the Si atom. The zero-point dissociation energy was estimated from the centrifugal distortion constant Dj to be 2.2 kJ mol -1. Small splitting, due to tunneling of the Ar atom and internal rotation of the two methyl groups, was observed, measured, and used to determine the potential energy surface for these motions.
AB - The rotational spectrum of the molecular complex dimethylsilane-argon was investigated by free-jet absorption millimeter-wave and molecular-beam Fourier transform spectroscopy. The absolute energy minimum corresponds to a conformation in which the argon atom lies in the plane of symmetry of dimethylsilane, perpendicular to the C-Si-C plane. The distance of Ar from the center of mass of dimethylsilane is 3.90 Å, and the Ar atom is tilted 14° away from the Si atom. The zero-point dissociation energy was estimated from the centrifugal distortion constant Dj to be 2.2 kJ mol -1. Small splitting, due to tunneling of the Ar atom and internal rotation of the two methyl groups, was observed, measured, and used to determine the potential energy surface for these motions.
KW - Argon
KW - Gas-phase reactions
KW - Noble gases
KW - Rotational spectrpscopy
KW - Van der Waals adducts
UR - http://www.scopus.com/inward/record.url?scp=9644281656&partnerID=8YFLogxK
U2 - 10.1002/cphc.200400191
DO - 10.1002/cphc.200400191
M3 - Article
C2 - 15580939
AN - SCOPUS:9644281656
VL - 5
SP - 1772
EP - 1778
JO - CHEMPHYSCHEM
JF - CHEMPHYSCHEM
SN - 1439-4235
IS - 11
ER -