Synthesis, Stability and Spectroscopy of Perdeuterofulleranes: C60D36 and C70D38 Evidences of Isotope Effects
Perdeuterated fulleranes C60D36 and C70D38 were synthesized by the action of deuterium chloride on zinc dust. The atomic deuterium formed on the surface of the Zn granules was effective in deuterating C60 and C70 fullerenes in solution. The chemical structure of the perdeuterated fulleranes was studied in comparison to the corresponding hydrogenated derivatives C60H36 and C70H38 by electronic absorption spectroscopy and FT-IR spectroscopy. With the latter analytical technique the isotope effect on the infrared spectra was studied in detail. The thermal stability of the perdeuterated fullerenes shows a remarkable isotope effect in comparison to hydrogenated fullerenes as measured by thermogravimetry and differential thermal analysis. Even the oxidation resistance to air appeared improved in the case of the perdeuterated fullerenes.
KeywordsElectronic Absorption Spectrum Isotope Effect Molar Extinction Coefficient Zinc Dust Fullerene Cage
The present research work has been supported by grant AYA2007-64748 from the Spanish Ministerio de Ciencia e Innovacion.
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