Conformation and stability of adducts of sulfurated cyclic compounds with water: Rotational spectrum of tetrahydrothiophene-water

ME Sanz, JC Lopez, JL Alonso, A Maris, PG Favero, W Caminati*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

The ground-state rotational spectrum of the tetrahydrothiophene ... water complex (C4H8S ... H2O) has been studied by free jet millimeter wave absorption and molecular beam Fourier transform microwave spectroscopy. The spectra of H2O and D2O combined with (C4H8S)-S-32 and (C4H8S)-S-34 were assigned. The rotational parameters have been interpreted in terms of a geometry in which the water molecule acts as proton donor lying close to the plane bisector to the CSC angle of tetrahydrothiophene. The "free" hydrogen is entgegen to the ring. The parameters characterizing the hydrogen bond are the distance between the sulfur and hydrogen atoms, r(S ... H) = 2.37(4) Angstrom, and the angle between the line bisecting the CSC angle of tetrahydrothiophene and the S ... H bond, phi = 85.(3)degrees. The deviation from collinearity of the atoms S ... H-O is suggested from theta = 162.(12)degrees.

Original languageEnglish
Pages (from-to)5285-5290
Number of pages6
JournalJOURNAL OF PHYSICAL CHEMISTRY A
Volume103
Issue number27
Publication statusPublished - 8 Jul 1999

Keywords

  • MILLIMETER-WAVE SPECTRUM
  • WEAKLY-BOUND COMPLEXES
  • GAS-PHASE
  • MICROWAVE SPECTROSCOPY
  • CLUSTERS
  • DYNAMICS
  • SPECTROMETER
  • MOLECULES
  • DIMERS

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