An order–disorder phase transition in the structure of C60·4benzene

Abstract

A reversible, broad, order–disorder phase transition in the structure of C60·4benzene has been observed to take place with an inflection point at 134 K. In the low-temperature structure fullerene disorder is removed, although the average atomic displacement parameters differ for the two C60 molecules in the asymmetric unit. Some benzene disorder persists, even at 13 K.