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Updated: Feb 7, 2026

Determination of the Gas-phase Acidities of Oligopeptides
Published on: June 24, 2013
Near- and Mid-IR Gas-Phase Absorption Spectra of H2@C60+-He
Dmitry V Strelnikov1, Juraj Jašík2, Dieter Gerlich3
1Division of Physical Chemistry of Microscopic Systems , Karlsruhe Institute of Technology (KIT) , Karlsruhe , Germany.
Abstract:
Near- and mid-IR absorption spectra of endohedral H2@C60+ have been measured using He-tagging. The samples have been prepared using a "molecular surgery" synthetic approach and were ionized and spectroscopically characterized in the gas phase. In contrast to neutral C60 and H2@C60, the corresponding He-tagged cationic species show distinct spectral differences. Shifts and line splittings in the near- and mid-IR regions indicate the influence of the caged hydrogen molecule on both the electronic ground and excited states. Possible relevance to astronomy is discussed.
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