Kinzelmann M, Reger D, Warmbrunn V, Lungerich D, Jux N, Drewello T. Superhelicenes in the gas phase: experimental and computational evidence of stable radical cation dimers.
Chem Commun (Camb) 2023;
59:5882-5885. [PMID:
37097081 DOI:
10.1039/d3cc01312j]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
Electrospray-ionization mass spectrometry (ESI-MS) readily produces stable radical cation π-dimers of the superhelicenes. Energy-resolved collision experiments reveal the dissociation of the dicationic dimer into two singly charged superhelicenes. DFT calculations indicate that open-shell dications composed of two radical cations are thermochemically more attractive than the closed-shell dimer formed by a doubly charged and a neutral superhelicene.
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