Mass spectrum showing anth2+ (C14H102+, m∕z = 89) with one (C14H102+-Ne, m∕z = 99) and two (C14H102+–Ne2, m∕z = 109) attached neon atoms. Additional mass peaks appearing with Δm∕z = 0.5 can be seen in the spectrum for the bare ion and Ne-dication complexes. They belong to dehydrogenated phen2+ (at lower mass) and 13C substituted or hydrogenated phen2+ (higher masses), respectively, see also van der Burgt et al. (2018). The mass resolution of the second quadrupole mass filter is better than m∕z = 0.5, which allowed us to mass select only the singly tagged target complex to record the IRPD spectra.
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