Structure and properties of fullerite C60 intercalated with CH2F2

We have obtained fullerite intercalated with CH2F2 by precipitation of C60 from the solution in 1,2‐dichlorobenzene saturated by CH2F2. The chemical composition was identified as (CH2F2)x C60 (x = 1.03 ± 0.21). The fcc lattice parameter (14.28 Å) was found to increase significantly for (CH2F2)C60 in comparison with that for pristine C60 (14.16 Å). The IR absorption peak attributed to the stretching vibration of the C–F bond in (CH2F2)C60 was 30 cm–1 shifted to lower wave numbers in comparison with the gas phase CH2F2 spectrum. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) For the first time, Shulga et al. have synthesized a fullerene intercalated with Freon CH2F2. The new fullerite proves the possibility of long‐term storage of Freons on ambient air at room temperature. A significant increase of the C60 fcc lattice parameter by 0.12 Å and an enormous shift of the C–F stretching vibration infrared band by 30 cm–1 result from the intercalation of C60 with CH2F2.