15min:

BASTIAN KERN, DMITRY STRELNIKOV, PATRIK WEIS, ARTUR BÖTTCHER AND MANFRED M. KAPPES, KIT Karlsruhe Institute for Technology, Division of Physical Chemistry of Microscopic Systems, Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany.

Mass-selected C₆₀ anions have been deposited in noble gas matrices (Ne,Ar) kept at ~6K. The vibronic properties of the species (C₆₀⁺, C₆₀⁰, C₆₀^-) were determined by NIR and MID-IR absorption spectroscopy. By co-depositing electrons without the addition of electron scavengers or donors to the host matrix, we were able to vary the C₆₀⁺/C₆₀^- ratio. By changing the C₆₀⁺/C₆₀^- ratio, previously known vibrational data of the C₆₀⁺ and C₆₀^- species could be confirmed and also extended further. DFT calculations performed on isolated C₆₀⁺ and C₆₀^- ions support the experimental assignment.