ROTATIONAL SPECTRA OF THE HYDROGEN-BONDED COMPLEXES: TETRAHYDROPYRAN-HCl AND OXETANE-HCl

Author Institution: Departamento de Quimica Fisica, Facultad de Ciencias, Universidad de ValladolidA molecular beam Fourier transform microwave spectrometer was used to characterize the axial and equatorial hydrogen bond dimers formed between tetrahydropyran and hydrogen chloride. Rotational, centrifugal distortion and Cl-nuclear quadrupole coupling constants have been determined for several isotopic species of both hydrogen bond conformers. The rotational parameters are consistent with a $C_{s}$ symmetry in both forms. The rotational spectra of oxetane-HCl has been observed in the frequency range from 5 to 18.5 GHz. Since oxetane reacts with HCl in the gas phase, mixtures of oxetane in argon and HCl in argon were independently flowed employing a modified pulsed valve. The structural properties of the hydrogen bond have been obtained from the rotational and quadrupole coupling constants