(a) Cyclohexane, (b) (4R)-(−)-carvone (type 2) and (c) (1R,4S)-(+)-fenchone (type 1) at 600 K. The simulations ran for 100 ps. We clearly note that cyclohexane easily reaches the boat–twist pseudorotating barrier, as does (4R)-(−)-carvone, but (1R,4S)-(+)-fenchone even after a longer simulation does not.