Hydrogen bonding in the gas phase: the thermodynamic properties of hydrogen fluoride-ether complexes and their far infrared spectra
Open Access
- 23 March 1971
- journal article
- Published by The Royal Society in Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
- Vol. 322 (1548), 137-146
- https://doi.org/10.1098/rspa.1971.0059
Abstract
The equilibrium constants of gas-phase complexes of HF with dimethyl, methyl ethyl and diethyl ether have been measured at several temperatures using the Benesi-Hildebrand approximation on the absorption band of the HF stretching vibration in the complex. From these, values of $\Delta $H of -43, -38 and -30 kJ mol$^{-1}$ respectively, have been determined. They are interpreted in terms of conformational rearrangements of the ethers when they form hydrogen bonds. The far infrared spectra of the complexes with both HF and DF have also been recorded and in each case a band observed at around 180 cm$^{-1}$ which is assigned to the intermolecular stretching mode of vibration. For the complex between HF and dimethyl ether a rotational contour has been observed at about 10 cm$^{-1}$.
Keywords
This publication has 8 references indexed in Scilit:
- Étude spectroscopique des complexes moléculaires entre les fluorures d'hydrogène et de deutérium et divers accepteurs de proton en phase gazeuse11Ce travail a bénéficié de l'aide matérielle du Commissariat à l'Énergie Atomique.Journal of Molecular Structure, 1970
- Spectres vibrationnels de huit espèces isotopiqnes d'éther méthyléthyliqueSpectrochimica Acta Part A: Molecular Spectroscopy, 1970
- The heat of dimerization of some carboxylic acids in the vapour phase determined by a spectroscopic methodSpectrochimica Acta Part A: Molecular Spectroscopy, 1969
- Far infared spectra of prolate and oblate symmetric topsSpectrochimica Acta Part A: Molecular Spectroscopy, 1968
- Vapor phase association of hydrogen chloride and acetoneSpectrochimica Acta Part A: Molecular Spectroscopy, 1967
- Rotational absorption of some asymmetric rotor molecules: Part I. Ozone and sulfur dioxideJournal of Molecular Spectroscopy, 1966
- 80. Hydrogen bonding in gaseous mixtures. Part II. Infrared spectra of ether–hydrogen fluroide systemsJournal of the Chemical Society, 1965
- 79. Hydrogen bonding in gaseous mixtures. Part I. Infrared spectra of ether–hydrogen chloride systemsJournal of the Chemical Society, 1965