Rotational spectra and molecular structures of ArHBr and KrHBr Journal Article uri icon



  • Rotational spectra have been observed for four isotopes of ArHBr and ArDBr and eight isotopes of KrHBr and KrDBr using a Fabry–Perot Fourier transform spectrometer with a pulsed supersonic nozzle as the molecular source. The rotational constants in the ground vibrational state ?0 with their centrifugal distortions DJ, as well as Br nuclear quadrupole coupling constants χa, are given. In addition, an important centrifugal distortion of the Br quadrupole coupling constant, Dχ, an indicator of the coupling between the radial and angular potentials, is given for ArHBr and KrHBr. The Br spin–rotation interaction c in ArHBr is also obtained. The results are: The molecular structures are consistent with a linear equilibrium geometry with the H(D) atom located between Br and the rare gas atoms. The complexes undergo large amplitude vibrations and estimates of the bending and stretching force constants and frequencies are given. By combining the bending, stretching, and their coupling, we have obtained the harmonic bending and stretching force constants (ks1 and kb1) and 6/12 Lennard-Jones potential parameters (ε and Re) for ArHCl, KrHCl, ArHBr, KrHBr.

publication date

  • March 1, 1980

has restriction

  • closed

Date in CU Experts

  • January 24, 2021 12:29 PM

Full Author List

  • Keenan MR; Campbell EJ; Balle TJ; Buxton LW; Minton TK; Soper PD; Flygare WH

author count

  • 7

Other Profiles

International Standard Serial Number (ISSN)

  • 0021-9606

Electronic International Standard Serial Number (EISSN)

  • 1089-7690

Additional Document Info

start page

  • 3070

end page

  • 3080


  • 72


  • 5