The rotational spectrum of the ethanol···argon van der Waals complex has been investigated by free-jet absorption millimeter-wave and molecular beams Fourier transform microwave spectroscopy. The spectra of normal and OD isotopomers have been assigned, but only for the complex with trans-ethanol. Ar motions produce vibrational splittings of 1.6662(7) and 1.70(2) MHz for the two isotopic species, respectively. The barrier hindering the tunnelling motion has been evaluated to be about 55 cm-1. The van der Waals structural parameters are: r0(Ar-O)=3.56(1) Å, α0 (∠ArOC) = 94°(1) and τ0 (∠ArOCC)=71°(1). The dissociation energy, as obtained from centrifugal distortion effects, is 2.1 kJ mol-1

MARIS A., CAMINATI W., VELINO B., ANDREWS C.M., HOWARD B.J. (2004). Free and pulsed jet rotational spectra and van der Waals motions of ethanol•••argon. CHEMICAL PHYSICS LETTERS, 399, 39-46 [10.1016/j.cplett.2004.09.131].

Free and pulsed jet rotational spectra and van der Waals motions of ethanol•••argon

MARIS, ASSIMO;CAMINATI, WALTHER;VELINO, BIAGIO;
2004

Abstract

The rotational spectrum of the ethanol···argon van der Waals complex has been investigated by free-jet absorption millimeter-wave and molecular beams Fourier transform microwave spectroscopy. The spectra of normal and OD isotopomers have been assigned, but only for the complex with trans-ethanol. Ar motions produce vibrational splittings of 1.6662(7) and 1.70(2) MHz for the two isotopic species, respectively. The barrier hindering the tunnelling motion has been evaluated to be about 55 cm-1. The van der Waals structural parameters are: r0(Ar-O)=3.56(1) Å, α0 (∠ArOC) = 94°(1) and τ0 (∠ArOCC)=71°(1). The dissociation energy, as obtained from centrifugal distortion effects, is 2.1 kJ mol-1
2004
MARIS A., CAMINATI W., VELINO B., ANDREWS C.M., HOWARD B.J. (2004). Free and pulsed jet rotational spectra and van der Waals motions of ethanol•••argon. CHEMICAL PHYSICS LETTERS, 399, 39-46 [10.1016/j.cplett.2004.09.131].
MARIS A.; CAMINATI W.; VELINO B.; ANDREWS C.M.; HOWARD B.J.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1039
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