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Journal articles
Proton inversion tunneling in the rotational spectrum of acetone cyanohydrin
Abstract : Rotational transitions of gauche-acetone cyanohydrin are measured in the microwave range between 5 and 23 GHz. Results from quantum chemical calculations indicate that the hydrogen atom of the hydroxyl group undergoes a tunneling motion connecting two equivalent structures. The observed signals are assigned to the two lowest tunneling substates 0+ and 0-, which belong to either a- or c-type transitions exhibiting Coriolis splittings of a few MHz. Additional hyperfine structure arises from the quadrupole coupling 14N nucleus. The energy separation between the 0+ and 0- states is predicted to be around 50 GHz. The molecular structure and internal dynamics are discussed in terms of their spectral signatures.
https://hal.u-pec.fr//hal-03182486
Contributor : Ha Vinh Lam Nguyen <>
Submitted on : Friday, March 26, 2021 - 1:22:46 PM
Last modification on : Friday, April 16, 2021 - 10:48:07 AM
Contributor : Ha Vinh Lam Nguyen <>
Submitted on : Friday, March 26, 2021 - 1:22:46 PM
Last modification on : Friday, April 16, 2021 - 10:48:07 AM
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