Production and characterization of crystalline 13C60

Holleman, I.; Boogaarts, M.G.H.; van Bentum, P.J.M.; Meijer, Gerard

doi:10.1016/0009-2614(95)00511-2

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Production and characterization of crystalline ¹³C₆₀

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Holleman, I., Boogaarts, M., van Bentum, P., & Meijer, G. (1995). Production and characterization of crystalline ¹³C₆₀. Chemical Physics Letters, 240(1-3), 165-171. doi:10.1016/0009-2614(95)00511-2.

Cite as: https://hdl.handle.net/21.11116/0000-000C-0835-0

Abstract

High-purity crystals of 99.1% ¹³C enriched C₆₀ have been produced and their Raman and fluorescence spectra recorded together with those of C₆₀ crystals containing the ¹³C isotope in natural abundance. The relative frequency shift of the intramolecular Raman-active modes is found to be determined by the square root of the averaged mass of the C₆₀ molecules. From the observed blue-shift of the electronic origin of the fluorescence spectrum of C₆₀ upon ¹²C→¹³C substitution, it is concluded that the averaged intramolecular vibrational frequency of C₆₀ decreases slightly upon electronic excitation.