SF6+: Stabilizing Transient Ions in Helium Nanodroplets
| Autor: | Paul Scheier, Olof Echt, Paul Martini, Simon Albertini, Stefan Bergmeister, Felix Laimer, Elisabeth Gruber, Milan Ončák, Fabio Zappa |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Letter 010304 chemical physics chemistry.chemical_element 01 natural sciences Ion chemistry Chemical physics 0103 physical sciences Physics::Atomic and Molecular Clusters General Materials Science Transient (oscillation) Physical and Theoretical Chemistry 010306 general physics Helium |
| Zdroj: | The Journal of Physical Chemistry Letters |
| ISSN: | 1948-7185 |
| Popis: | There are myriad ions that are deemed too short-lived to be experimentally accessible. One of them is SF6+. It has never been observed, although not for lack of trying. We demonstrate that long-lived SF6+ can be formed by doping charged helium nanodroplets (HNDs) with sulfur hexafluoride; excess helium is then gently stripped from the doped HNDs by collisions with helium gas. The ion is identified by high-resolution mass spectrometry (resolution m/Δm = 15000), the close agreement between the expected and observed yield of ions that contain minor sulfur isotopes, and collision-induced dissociation in which mass-selected HenSF6+ ions collide with helium gas. Under optimized conditions, the yield of SF6+ exceeds that of SF5+. The procedure is versatile and suitable for stabilizing many other transient molecular ions. |
| Databáze: | OpenAIRE |
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