  Molecular Dynamics simulations of crystallization in a supercooled liquid of
Lennard-Jones particles with different range of attractions shows that the
inclusion of the attractive forces from the first, second and third
coordination shell increases the trend to crystallize systematic. The
bond-order $Q_6$ in the supercooled liquid is heterogeneously distributed with
clusters of particles with relative high bond-order for a supercooled liquid,
and a systematic increase of the extent of heterogeneity with increasing range
of attractions. The onset of crystallization appears in such a cluster, which
together explains the attractive forces influence on crystallization. The mean
square displacement and self-diffusion constant exhibit the same dependence on
the range of attractions in the dynamics and shows, that the attractive forces
and the range of the forces plays an important role for bond-ordering,
diffusion and for crystallization.
