| Autor: |
Cole, William T. S., Fellers, Ray S., Viant, Mark R., Leforestier, Claude, Saykally, Richard J. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 2015, Vol. 143 Issue 15, p1-16, 16p, 5 Diagrams, 6 Charts, 4 Graphs |
| Abstrakt: |
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-1 and assigned to (H2O)2 libration-rotation-tunneling eigenstates. The band origin for the Ka = 1 subband is ~524 cm-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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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