Highlights

Highlights from the Controlled Molecule Imaging Group (see all news)

Biomolecular building blocks gripped by laser published by Nature Communications

17 March 2022

DESY team accurately aligns indole molecules and positions them for a detailed examination

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Conformer-specific polar Diels–Alder cycloadditions published and selected as Highlight by Nat. Comm.

18 October 2021

There has been a long-standing discussion whether Diels–Alder cycloadditions proceed via stepwise or concerted mechanisms. By combining a conformationally controlled molecular beam with trapped ions, we explored the mechanism of the model polar cycloaddition of conformer-specific 2,3-dibromo-1,3-butadiene with propene ions under single-collision conditions in the gas phase. Both conformers of the diene are reactive with capture-limited reaction rates and a simultaneous competition of concerted and stepwise reaction pathways was found.

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