By slowly evaporating at room temperature solutions of C60in n-octane, crystals of the hexagonal solvate C601 n-octane have been obtained (a = 10.10, c = 10.18 Å)., Although these crystals are formed with a negative volume excess of − 24 Å3per formula-unit, their desolvation enthalpy, 60 J g−1(50 kJ mol−1), is close to the sublimation enthalpy of pure n-octane.
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