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Near- and Mid-IR Gas-Phase Absorption Spectra of H2@C60+-He

. 2018 Oct 18 ; 122 (41) : 8162-8166. [epub] 20180813

Status PubMed-not-MEDLINE Language English Country United States Media print-electronic

Document type Journal Article

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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