ORIENTATIONAL ORDERING IN SOLID C70 - PREDICTIONS FROM COMPUTER-SIMULATION

The low-presure phases in solid C70 have been explored using constant-pressure molecular dynamics and an empirical intermolecular potential extrapolated from one that gives an excellent account of the properties of solid C60. On cooling the high-temperature rotator phase, we find a transition to a partially ordered phase with trigonal symmetry and then a second transition to a monoclinic structure.