Determination of the low-temperature structure of hexamethylbenzene.
The low-temperature structure of hexamethylbenzene has been determined from neutron powder diffraction data and found to differ from the room-temperature phase predominantly by a translation of molecular planes to a form a cubic close-packed type structure. By performing measurements as a function of temperature, the role of thermally induced agitation of the molecular units in the first-order phase transition is clearly demonstrated.
Stride
John A
JA
Institut Laue-Langevin, 6 rus Jules Horowitz, F-38042 Grenoble, France. stride@ill.fr