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Author Cole, William T. S. ♦ Fellers, Ray S. ♦ Viant, Mark R. ♦ Saykally, Richard J. ♦ Leforestier, Claude
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ♦ DIMERS ♦ DISTURBANCES ♦ EIGENSTATES ♦ ENERGY LEVELS ♦ EXCITATION ♦ HYDROGEN ♦ LASER SPECTROSCOPY ♦ LEAST SQUARE FIT ♦ PERTURBATION THEORY ♦ ROTATION ♦ SPECTRA ♦ TUNNEL EFFECT ♦ TUNNELING ♦ WATER
Abstract We report the first high-resolution spectra for the out-of-plane librational vibration in the water dimer. Three vibrational subbands comprising a total of 188 transitions have been measured by diode laser spectroscopy near 500 cm{sup −1} and assigned to (H{sub 2}O){sub 2} libration-rotation-tunneling eigenstates. The band origin for the K{sub a} = 1 subband is ~524 cm{sup −1}. Librational excitation increases the interchange and bifurcation hydrogen bond rearrangement tunneling splittings by factors of 3-5 and 4-40, respectively. Analysis of the rotational constants obtained from a nonlinear least squares fit indicates that additional external perturbations to the energy levels are likely.
ISSN 00219606
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-10-21
Publisher Place United States
Journal Journal of Chemical Physics
Volume Number 143
Issue Number 15


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