(Graph Presented) Increased mobility is observed for the sodiated syn and anti isomers of bis-Tröger base 1 relative to that of the protonated variants. Ion-mobility measurements further demonstrate that the pseudo-epimerization of the bis-Tröger base proceeds by a proton-mediated ring opening rather than a retro-Diels-Alder sequence.
- Ion-mobility mass spectrometry
- Sodium complexes
- Tröger bases
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