PHASE-TRANSITION C-60-C-60-ASTERISK-4C(6)H(6) IN LIQUID BENZENE

The results of the first direct observations of the transition between solvated C-60C6H6 and pure fee C-60 in benzene solution with optical microscopy and combined with X-ray powder diffraction are presented. It is shown that the solvated C-604C(6)H(6) structure at room tempera ture is significantly different from the low-temperature structure des cribed before. The temperature of phase transition was found to be bet ween 40 and 41.5 degrees C. A new method of growth of solvated crystal s based on recrystallization of face-centered cubic C-60 to solvated f orm is described.