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Shape-Shifting Molecules: Unveiling the Valence Tautomerism Phenomena in Bare Barbaralones.
- Source :
-
Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2022 Apr 25; Vol. 61 (18), pp. e202117045. Date of Electronic Publication: 2022 Mar 24. - Publication Year :
- 2022
-
Abstract
- We report a state-of-the-art spectroscopic study of an archetypical barbaralone, conclusively revealing the valence tautomerism phenomena for this bistable molecular system. The two distinct 1- and 5-substituted valence tautomers have been isolated in a supersonic expansion for the first time and successfully characterized by high-resolution rotational spectroscopy. This work provides irrefutable experimental evidence of the [3,3]-rearrangement in barbaralones and highlights the use of rotational spectroscopy to analyze shape-shifting mixtures. Moreover, this observation opens the window toward the characterization of new fluxional systems in the isolation conditions of the gas phase and should serve as a reference point in the general understanding of valence tautomerism.<br /> (© 2022 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.)
Details
- Language :
- English
- ISSN :
- 1521-3773
- Volume :
- 61
- Issue :
- 18
- Database :
- MEDLINE
- Journal :
- Angewandte Chemie (International ed. in English)
- Publication Type :
- Academic Journal
- Accession number :
- 35165988
- Full Text :
- https://doi.org/10.1002/anie.202117045