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

被引：24

作者：

Maris, A

Caminati, W

Velino, B

Andrews, CM

Howard, BJ

机构：

[1] Univ Bologna, Dipartimento Chim G Ciamician, I-40126 Bologna, Italy

[2] Univ Bologna, Dipartimento Chim Fis & Inorgan, I-40136 Bologna, Italy

[3] Univ Oxford, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 399卷 / 1-3期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/j.cplett.2004.09.131

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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: r(0)(Ar-O) = 3.56(1) Angstrom, a(0)(angleArOC) = 94degrees(1) and tau(0)(angleArOCC) 71degrees(1). The dissociation energy, as obtained from centrifugal distortion effects, is 2.1 kJ mol(-1). (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：39 / 46

页数：8

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