The rotational spectrum of the dimethyl ether ± hydrogen fluoride complex was assigned by millimetre-wave free-jet absorption spectroscopy. Fine details of the spectrum were resolved by FT microwave molecular-beam spectroscopy. The HF group acts as a proton donor and tunnels at a rate of 44178.2(7) MHz between the two oxygen lone pairs, which corresponds to an inversion barrier of 0.17(1) kcal mol1. The barrier to internal rotation of the two methyl groups is about 25% lower relative to the isolated ether.

Tunnelling Motion of HF Between the Two Oxygen Lone Pairs in the Dimethyl Ether-Hydrogen Fluoride Complex: A Pure Rotational Study

OTTAVIANI, PAOLO;CAMINATI, WALTHER;VELINO, BIAGIO;
2004

Abstract

The rotational spectrum of the dimethyl ether ± hydrogen fluoride complex was assigned by millimetre-wave free-jet absorption spectroscopy. Fine details of the spectrum were resolved by FT microwave molecular-beam spectroscopy. The HF group acts as a proton donor and tunnels at a rate of 44178.2(7) MHz between the two oxygen lone pairs, which corresponds to an inversion barrier of 0.17(1) kcal mol1. The barrier to internal rotation of the two methyl groups is about 25% lower relative to the isolated ether.
OTTAVIANI P.; CAMINATI W.; VELINO B.; BLANCO S.; LESARRI A.; LOPEZ J.C.; ALONSO J.L.
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1031
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 14
  • ???jsp.display-item.citation.isi??? 14
social impact