Abstract
The structural and phase state of the C60-C70 system at various C60/C70 ratios in mixtures obtained by the vaporization of solutions in toluene at ∼98°C was studied by X-ray structure analysis, differential scanning calorimetry, and infrared spectroscopy. Solid solutions based on the face-centered cubic packing of C60 are not formed in the C60-C70 system at C70 contents from 0.5 to 50 wt %. The hexagonal close packing of a solid solution of C60 in C70 can be formed as a result of the thermally activated decomposition of the ternary crystal solvate in the C60-C70-C6H5CH3 system. The structural state of multiphase mixtures formed under conditions far from equilibrium is characterized by a high degree of structure imperfection and greater ability to undergo oxidation compared with C60 and C70.
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Original Russian Text © M.A. Eremina, R.M. Nikonova, V.I. Lad’yanov, V.V. Aksenova, 2009, published in Zhurnal Fizicheskoi Khimii, 2009, Vol. 83, No. 11, pp. 2113–2123.
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Eremina, M.A., Nikonova, R.M., Lad’yanov, V.I. et al. The structural-phase state of C60-C70 fullerene mixtures. Russ. J. Phys. Chem. 83, 1924–1934 (2009). https://doi.org/10.1134/S0036024409110193
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DOI: https://doi.org/10.1134/S0036024409110193